{"schema":"lookcloser/record@0.2","compatible_with":["lookcloser/record@0.1"],"record_id":"700598638004","processing":{"collection_process_version":"2026-07-24.5","last_collected_at":"2026-08-10T15:12:46-0700","last_collection_event":"intake","label_reader_version":"2026-07-27.1","report_schema":"lookcloser/record@0.2","rendered_at":"2026-08-10T16:35:03-0700"},"analysis_status":"complete","processing_gaps":[],"gtin":"700598638004","listing_identifier":"B00HZWHGJ4","brand":"NATURAL STACKS","title":"Natural Stacks MagTech® Magnesium","listing_title":"MagTech Magnesium Complex Glycinate, L-Threonate and Taurate, 90 Capsules","identity":{"canonical_gtin":"00700598638004","source_listing_gtin":"00700598638004","listing_identifier":"B00HZWHGJ4","product_image":"https://m.media-amazon.com/images/I/61JatFea35L.jpg","product_image_status":"retained","product_image_provenance":{"status":"retained","source":"source_listing","identity_basis":"exact_listing_identifier","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","primary_url":"https://m.media-amazon.com/images/I/61JatFea35L.jpg","image_count":8,"last_attempted":"2026-08-10T15:12:46-0700","attempts":1},"observed_at":"2026-08-10","source_confirmations":["source_listing_gtin","external_barcode_record","brand_store_gtin"],"brand_consistency":{"status":"match","compatible":true,"listing_brand":"NATURAL STACKS","package_brand":"NATURAL STACKS","match_method":"normalized_exact","similarity":1},"identity_rule":"exact identifiers only; related products are never substituted"},"trademark_owner":null,"trademark_owner_candidates":[],"trademark_owner_status":"not_found","product_manufacturer_link":"not_established","label_responsible_parties":[{"role":"distributed_by","name":"AIDP, Inc.","address":null,"verbatim":"Magtein™ is a trademark of Magceutics, Inc. and is distributed exclusively by AIDP, Inc."}],"identity_nodes":[{"role":"distributed_by","name":"AIDP, Inc.","address":null,"verbatim":"Magtein™ is a trademark of Magceutics, Inc. and is distributed exclusively by AIDP, Inc.","source_ref":"facts_panel","identity_basis":"verbatim_package_text","relationship_to_trademark_owner":"not_comparable","relationship_limit":"Different printed and trademark-owner names do not establish a conflict; the entities may have distributor, manufacturer, or licensing relationships."}],"seller_of_record":null,"seller_of_record_status":"not_collected_founder_gated","consumer_view":{"template":"claim_panel","kicker":"The useful read","headline":"Listing claim matches the Supplement Facts panel","deck":"The label promise and the Supplement Facts amount agree.","display_mode":"single_home_per_finding","finding_ids":["label-and-serving-arithmetic-listing-claim-matches-the-supplement-facts-","nih-published-research-each-ingredient-s-amount-is-disclosed","brand-storefront-same-barcode-on-the-brand-s-own-store","nih-published-research-research-context-is-available-for-the-listed-ingr","nih-published-research-reaching-a-studied-dose-costs-about-34-month"],"point_finding_ids":["label-and-serving-arithmetic-listing-claim-matches-the-supplement-facts-","nih-published-research-each-ingredient-s-amount-is-disclosed","brand-storefront-same-barcode-on-the-brand-s-own-store"],"cards":[{"finding_id":"label-and-serving-arithmetic-listing-claim-matches-the-supplement-facts-","card_type":"claim_matches_panel","question":"label","tone":"ok","weight":52,"headline":"Listing claim matches the Supplement Facts panel","evidence":"The listing claims 200 mg; the photo-read Supplement Facts panel shows Magnesium at 200 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.","so_what":"The label promise and the Supplement Facts amount agree.","source":"Label and serving arithmetic","source_links":[],"registry_receipts":[],"evidence_id":"ev-6dead6de1468","evidence_url":"https://lookcloser.ai/e/ev-6dead6de1468","presentation_home":"finding_catalog"},{"finding_id":"nih-published-research-each-ingredient-s-amount-is-disclosed","card_type":"amounts_disclosed","question":"label","tone":"ok","weight":50,"headline":"Every ingredient shows its amount · 4 ingredients listed.","evidence":"The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.","so_what":"Every ingredient shows its real amount — nothing is hidden in a proprietary blend.","source":"NIH / published research","source_links":[],"registry_receipts":[],"evidence_id":"ev-7de6b6fbc184","evidence_url":"https://lookcloser.ai/e/ev-7de6b6fbc184","presentation_home":"finding_catalog"},{"finding_id":"brand-storefront-same-barcode-on-the-brand-s-own-store","card_type":"upc_corroborated","question":"owner","tone":"ok","weight":48,"headline":"The barcode identity checks out · 700598638004.","evidence":"The brand's store lists this exact barcode as “MagTech® Magnesium” (variant: 90ct) — identity confirmed across retailer listings.","so_what":"The barcode matches, so we are checking the right product rather than a look-alike.","source":"Brand storefront","source_links":[],"registry_receipts":[],"evidence_id":"ev-be6efa3491da","evidence_url":"https://lookcloser.ai/e/ev-be6efa3491da","presentation_home":"finding_catalog"},{"finding_id":"nih-published-research-research-context-is-available-for-the-listed-ingr","card_type":"research_available","question":"goals","tone":"neutral","weight":44,"headline":"Research links are available for magnesium.","evidence":"Published sources describe how magnesium have been studied. This is ingredient context only; the record does not establish that this product delivers the studied dose or outcome. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation.","so_what":"Use the linked research to check whether the ingredient and outcome you care about are actually connected. Ingredient evidence does not verify this product.","source":"NIH / published research","source_links":[{"label":"NIH ODS — Magnesium fact sheet","url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","role":"magnesium context · not product evidence"},{"label":"PubMed search: magnesium glycinate supplementation","url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","role":"magnesium context · not product evidence"}],"registry_receipts":[{"source":"nih_ods_magnesium","url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","label":"NIH ODS — Magnesium fact sheet","registry_name":"NIH ODS","standard":null,"identifier":"magnesium"}],"evidence_id":"ev-c485ae8f80f4","evidence_url":"https://lookcloser.ai/e/ev-c485ae8f80f4","presentation_home":"research_section"},{"finding_id":"nih-published-research-reaching-a-studied-dose-costs-about-34-month","card_type":"cost_to_reach_dose","question":"value","tone":"neutral","weight":42,"headline":"Reaching a studied dose costs about $34/month","evidence":"At 1.0 serving(s) a day to reach the low end of the studied range (200–420 mg), this product runs roughly $34 per month. A price observation, not a recommendation.","so_what":"Comparing cost at a research-relevant amount shows how quickly the package is used and what the routine actually costs.","source":"NIH / published research","source_links":[],"registry_receipts":[],"evidence_id":"ev-bef44a10aaca","evidence_url":"https://lookcloser.ai/e/ev-bef44a10aaca","presentation_home":"finding_catalog"}],"research_links":[{"ingredient":"magnesium","label":"NIH ODS — Magnesium fact sheet","url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","scope":"ingredient_context","product_evidence":false},{"ingredient":"magnesium","label":"PubMed search: magnesium glycinate supplementation","url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","scope":"ingredient_context","product_evidence":false}],"open_items":["No FDA recall matched this brand in the current search.","We have not found a public label filing for this exact product.","Brand ownership is not settled in this record."]},"tldr":{"assessment":"checks_confirmed","headline":"Listing claim matches the Supplement Facts panel","summary":"The listing claims 200 mg; the photo-read Supplement Facts panel shows Magnesium at 200 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.","lead_finding_id":"label-and-serving-arithmetic-listing-claim-matches-the-supplement-facts-","key_findings":[{"id":"nih-published-research-each-ingredient-s-amount-is-disclosed","class":"ok","headline":"Each ingredient’s amount is disclosed","source":"NIH / published research","scope":"ingredient_context"},{"id":"brand-storefront-same-barcode-on-the-brand-s-own-store","class":"ok","headline":"Same barcode on the brand's own store","source":"Brand storefront","scope":"exact_listing"}],"documented_concern_count":0,"confirmed_check_count":3,"open_question_count":1,"usage_note":"Decision support, not medical advice or a product recommendation. Missing evidence is a gap, not a strike."},"origin_context":null,"verdict":{"state":"checks_confirmed","headline":"Listing claim matches the Supplement Facts panel","detail":"The listing claims 200 mg; the photo-read Supplement Facts panel shows Magnesium at 200 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.","lead_finding_id":"label-and-serving-arithmetic-listing-claim-matches-the-supplement-facts-","meaning":"Finding-first decision support. Confirmed checks are not endorsements; cautions identify documented facts or bounded comparisons, not medical advice."},"public_verifiability":{"state":"insufficient_public_data","headline":"This product can't be verified from public data","detail":"Neither good nor bad — the checks below show what this listing publishes and what it withholds. Verifiable products publish more.","meaning":"Evidence availability only. Missing public data is a gap, never a strike."},"consistency_score":null,"findings":[{"id":"nih-published-research-each-ingredient-s-amount-is-disclosed","source":"NIH / published research","class":"ok","noted":false,"severity":"ok","weight":38,"headline":"Each ingredient’s amount is disclosed","detail":"The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.","proof":"The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.","identity_basis":"ingredient","status":"live","source_refs":["nih_ods_magnesium","pubmed_magnesium"],"source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","scope":"ingredient_context","inference_level":"direct_observation","observed_at":"2026-08-10","presentation_tone":"ok","evidence_id":"ev-7de6b6fbc184","evidence_url":"https://lookcloser.ai/e/ev-7de6b6fbc184","content_fingerprint":"sha256:0fe75c54e164ce449796af3abc189b89455cc9538ed7069ab51b42eea47233a9","registry_receipts":[],"evidence":{"summary":"The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.","source_refs":["nih_ods_magnesium","pubmed_magnesium"],"source_records":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-10","looked":"LookCloser checked NIH / published research.","found":"The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research."},"html_anchor":"finding-nih-published-research-each-ingredient-s-amount-is-disclosed","report_url":"https://lookcloser.ai/p/700598638004/full#finding-nih-published-research-each-ingredient-s-amount-is-disclosed"},{"id":"brand-storefront-same-barcode-on-the-brand-s-own-store","source":"Brand storefront","class":"ok","noted":false,"severity":"ok","weight":38,"headline":"Same barcode on the brand's own store","detail":"The brand's store lists this exact barcode as “MagTech® Magnesium” (variant: 90ct) — identity confirmed across retailer listings.","proof":"The brand's store lists this exact barcode as “MagTech® Magnesium” (variant: 90ct) — identity confirmed across retailer listings.","identity_basis":"listing","status":"live","source_refs":["brand_store","source_listing"],"source_url":"https://naturalstacks.com/products/magtech","scope":"exact_listing","inference_level":"direct_observation","observed_at":"2026-08-10","presentation_tone":"ok","evidence_id":"ev-be6efa3491da","evidence_url":"https://lookcloser.ai/e/ev-be6efa3491da","content_fingerprint":"sha256:0ace8e831043559fc27881c32108941d6571a7260d89e0665f4e780ad3fa12f6","registry_receipts":[],"evidence":{"summary":"The brand's store lists this exact barcode as “MagTech® Magnesium” (variant: 90ct) — identity confirmed across retailer listings.","source_refs":["brand_store","source_listing"],"source_records":[{"source":"brand_store","source_url":"https://naturalstacks.com/products/magtech","observed_at":"2026-08-10","identity_basis":"exact_gtin","scope":"brand_or_exact_product"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-10","looked":"LookCloser checked Brand storefront.","found":"The brand's store lists this exact barcode as “MagTech® Magnesium” (variant: 90ct) — identity confirmed across retailer listings."},"html_anchor":"finding-brand-storefront-same-barcode-on-the-brand-s-own-store","report_url":"https://lookcloser.ai/p/700598638004/full#finding-brand-storefront-same-barcode-on-the-brand-s-own-store"},{"id":"barcode-gtin-record-upc-independently-corroborated","source":"Barcode / GTIN record","class":"ok","noted":false,"severity":"ok","weight":38,"headline":"UPC independently corroborated","detail":"UPCitemdb resolves 700598638004 to \"Natural Stacks MagTech Magnesium Supplement - Magtein Magnesium L-Threonate for \" (Natural Stacks) — consistent with this listing.","proof":"UPCitemdb resolves 700598638004 to \"Natural Stacks MagTech Magnesium Supplement - Magtein Magnesium L-Threonate for \" (Natural Stacks) — consistent with this listing.","identity_basis":"gtin","status":"live","source_refs":["barcode_search","source_listing"],"source_url":"https://world.openfoodfacts.org/product/00700598638004","scope":"exact_product","inference_level":"direct_observation","observed_at":"2026-08-10","presentation_tone":"ok","evidence_id":"ev-b0c2ff4496a5","evidence_url":"https://lookcloser.ai/e/ev-b0c2ff4496a5","content_fingerprint":"sha256:c7cd95c74e09dcf5d251a9eebfbec31f0f7949b15b9ad3f3437666bd0af3af50","registry_receipts":[],"evidence":{"summary":"UPCitemdb resolves 700598638004 to \"Natural Stacks MagTech Magnesium Supplement - Magtein Magnesium L-Threonate for \" (Natural Stacks) — consistent with this listing.","source_refs":["barcode_search","source_listing"],"source_records":[{"source":"barcode_search","source_url":"https://world.openfoodfacts.org/product/00700598638004","observed_at":"2026-08-10","identity_basis":"gtin","scope":"exact_gtin"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-10","looked":"LookCloser checked Barcode / GTIN record.","found":"UPCitemdb resolves 700598638004 to \"Natural Stacks MagTech Magnesium Supplement - Magtein Magnesium L-Threonate for \" (Natural Stacks) — consistent with this listing."},"html_anchor":"finding-barcode-gtin-record-upc-independently-corroborated","report_url":"https://lookcloser.ai/p/700598638004/full#finding-barcode-gtin-record-upc-independently-corroborated"},{"id":"label-and-serving-arithmetic-listing-claim-matches-the-supplement-facts-","source":"Label and serving arithmetic","class":"gap","noted":false,"severity":"info","weight":22,"headline":"Listing claim matches the Supplement Facts panel","detail":"The listing claims 200 mg; the photo-read Supplement Facts panel shows Magnesium at 200 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.","proof":"The listing claims 200 mg; the photo-read Supplement Facts panel shows Magnesium at 200 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.","identity_basis":"listing","status":"live","source_refs":["facts_panel","source_listing"],"source_url":"https://www.amazon.com/dp/B00HZWHGJ4","scope":"exact_listing","inference_level":"gap","observed_at":"2026-08-10","presentation_tone":"gap","evidence_id":"ev-6dead6de1468","evidence_url":"https://lookcloser.ai/e/ev-6dead6de1468","content_fingerprint":"sha256:9cf5e6174bc9bc092afe005505ae2ca4c7a853e3d4f845e16b35d5f898083b5b","registry_receipts":[],"evidence":{"summary":"The listing claims 200 mg; the photo-read Supplement Facts panel shows Magnesium at 200 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.","source_refs":["facts_panel","source_listing"],"source_records":[{"source":"facts_panel","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-10","looked":"LookCloser checked Label and serving arithmetic.","found":"The listing claims 200 mg; the photo-read Supplement Facts panel shows Magnesium at 200 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing."},"html_anchor":"finding-label-and-serving-arithmetic-listing-claim-matches-the-supplement-facts-","report_url":"https://lookcloser.ai/p/700598638004/full#finding-label-and-serving-arithmetic-listing-claim-matches-the-supplement-facts-"},{"id":"nih-published-research-magnesium-amount-in-daily-intake-context","source":"NIH / published research","class":"gap","noted":false,"severity":"info","weight":22,"headline":"Magnesium amount, in daily-intake context","detail":"label states 200 mg/serving — about 48% of the adult daily reference (adult RDA 310–420 mg elemental; NIH sets 350 mg/day as the supplemental upper level for elemental magnesium). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate labels (glycinate, citrate) often state compound mass, which reads ~5–7× higher than elemental magnesium — the Supplement Facts panel settles which is meant. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation.","proof":"label states 200 mg/serving — about 48% of the adult daily reference (adult RDA 310–420 mg elemental; NIH sets 350 mg/day as the supplemental upper level for elemental magnesium). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate labels (glycinate, citrate) often state compound mass, which reads ~5–7× higher than elemental magnesium — the Supplement Facts panel settles which is meant. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation.","identity_basis":"ingredient","status":"live","source_refs":["nih_ods_magnesium","pubmed_magnesium"],"source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","scope":"ingredient_context","inference_level":"gap","observed_at":"2026-08-10","presentation_tone":"gap","evidence_id":"ev-24cb5dc0553f","evidence_url":"https://lookcloser.ai/e/ev-24cb5dc0553f","content_fingerprint":"sha256:da9ebf5081fdb3c90c76d6110c99e1f9e0b5c96455b0af4c391f246cb3a5b4f3","registry_receipts":[{"source":"nih_ods_magnesium","url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","label":"NIH ODS — Magnesium fact sheet","registry_name":"NIH ODS","standard":null,"identifier":"magnesium"}],"evidence":{"summary":"label states 200 mg/serving — about 48% of the adult daily reference (adult RDA 310–420 mg elemental; NIH sets 350 mg/day as the supplemental upper level for elemental magnesium). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate labels (glycinate, citrate) often state compound mass, which reads ~5–7× higher than elemental magnesium — the Supplement Facts panel settles which is meant. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation.","source_refs":["nih_ods_magnesium","pubmed_magnesium"],"source_records":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-10","looked":"LookCloser checked NIH / published research.","found":"label states 200 mg/serving — about 48% of the adult daily reference (adult RDA 310–420 mg elemental; NIH sets 350 mg/day as the supplemental upper level for elemental magnesium). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate labels (glycinate, citrate) often state compound mass, which reads ~5–7× higher than elemental magnesium — the Supplement Facts panel settles which is meant. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation."},"html_anchor":"finding-nih-published-research-magnesium-amount-in-daily-intake-context","report_url":"https://lookcloser.ai/p/700598638004/full#finding-nih-published-research-magnesium-amount-in-daily-intake-context"},{"id":"nih-published-research-reaching-a-studied-dose-costs-about-34-month","source":"NIH / published research","class":"gap","noted":false,"severity":"info","weight":22,"headline":"Reaching a studied dose costs about $34/month","detail":"At 1.0 serving(s) a day to reach the low end of the studied range (200–420 mg), this product runs roughly $34 per month. A price observation, not a recommendation.","proof":"At 1.0 serving(s) a day to reach the low end of the studied range (200–420 mg), this product runs roughly $34 per month. A price observation, not a recommendation.","identity_basis":"ingredient","status":"live","source_refs":["nih_ods_magnesium","pubmed_magnesium"],"source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","scope":"ingredient_context","inference_level":"gap","observed_at":"2026-08-10","presentation_tone":"gap","evidence_id":"ev-bef44a10aaca","evidence_url":"https://lookcloser.ai/e/ev-bef44a10aaca","content_fingerprint":"sha256:c2005e02ab754be737a5dadae6a1989e79e997c370bc1f66bf8190319986fefc","registry_receipts":[],"evidence":{"summary":"At 1.0 serving(s) a day to reach the low end of the studied range (200–420 mg), this product runs roughly $34 per month. A price observation, not a recommendation.","source_refs":["nih_ods_magnesium","pubmed_magnesium"],"source_records":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-10","looked":"LookCloser checked NIH / published research.","found":"At 1.0 serving(s) a day to reach the low end of the studied range (200–420 mg), this product runs roughly $34 per month. A price observation, not a recommendation."},"html_anchor":"finding-nih-published-research-reaching-a-studied-dose-costs-about-34-month","report_url":"https://lookcloser.ai/p/700598638004/full#finding-nih-published-research-reaching-a-studied-dose-costs-about-34-month"},{"id":"nih-published-research-research-context-is-available-for-the-listed-ingr","source":"NIH / published research","class":"gap","noted":false,"severity":"info","weight":22,"headline":"Research context is available for the listed ingredients","detail":"Published sources describe how magnesium have been studied. This is ingredient context only; the record does not establish that this product delivers the studied dose or outcome. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation.","proof":"Published sources describe how magnesium have been studied. This is ingredient context only; the record does not establish that this product delivers the studied dose or outcome. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation.","identity_basis":"ingredient","status":"live","source_refs":["nih_ods_magnesium","pubmed_magnesium"],"source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","scope":"ingredient_context","inference_level":"gap","observed_at":"2026-08-10","presentation_tone":"gap","evidence_id":"ev-c485ae8f80f4","evidence_url":"https://lookcloser.ai/e/ev-c485ae8f80f4","content_fingerprint":"sha256:8baccbe85a31119ba6fa3b6251b43f0ab9d9bdc65d51641691c9ab76f9fb5228","registry_receipts":[{"source":"nih_ods_magnesium","url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","label":"NIH ODS — Magnesium fact sheet","registry_name":"NIH ODS","standard":null,"identifier":"magnesium"}],"evidence":{"summary":"Published sources describe how magnesium have been studied. This is ingredient context only; the record does not establish that this product delivers the studied dose or outcome. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation.","source_refs":["nih_ods_magnesium","pubmed_magnesium"],"source_records":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-10","looked":"LookCloser checked NIH / published research.","found":"Published sources describe how magnesium have been studied. This is ingredient context only; the record does not establish that this product delivers the studied dose or outcome. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation."},"html_anchor":"finding-nih-published-research-research-context-is-available-for-the-listed-ingr","report_url":"https://lookcloser.ai/p/700598638004/full#finding-nih-published-research-research-context-is-available-for-the-listed-ingr"},{"id":"label-and-serving-arithmetic-public-label-filing-not-retained","source":"Label and serving arithmetic","class":"gap","noted":false,"severity":"info","weight":19,"headline":"Public label filing not retained","detail":"We have not found a public label filing for this exact product. That is a gap in our records, not evidence that no filing exists.","proof":"We have not found a public label filing for this exact product. That is a gap in our records, not evidence that no filing exists.","identity_basis":"listing","status":"live","source_refs":["facts_panel","source_listing"],"source_url":"https://www.amazon.com/dp/B00HZWHGJ4","scope":"exact_listing","inference_level":"gap","observed_at":"2026-08-10","presentation_tone":"gap","evidence_id":"ev-21fdc406ad58","evidence_url":"https://lookcloser.ai/e/ev-21fdc406ad58","content_fingerprint":"sha256:cef571ff517f1a882dd204117bae56c0b432014ad700f3127fc4c2539cf6b5ff","registry_receipts":[],"evidence":{"summary":"We have not found a public label filing for this exact product. That is a gap in our records, not evidence that no filing exists.","source_refs":["facts_panel","source_listing"],"source_records":[{"source":"facts_panel","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-10","looked":"LookCloser checked Label and serving arithmetic.","found":"We have not found a public label filing for this exact product. That is a gap in our records, not evidence that no filing exists."},"html_anchor":"finding-label-and-serving-arithmetic-public-label-filing-not-retained","report_url":"https://lookcloser.ai/p/700598638004/full#finding-label-and-serving-arithmetic-public-label-filing-not-retained"},{"id":"fda-public-records-recall-search-no-match-found-as-of-aug-10-2026","source":"FDA public records","class":"gap","noted":false,"severity":"info","weight":19,"headline":"Recall search: no match found (as of Aug 10, 2026)","detail":"This means only that no enforcement record matched the brand name — it does not mean the product was tested, reviewed, or cleared by FDA. New and untested products also have no recall records.","proof":"This means only that no enforcement record matched the brand name — it does not mean the product was tested, reviewed, or cleared by FDA. New and untested products also have no recall records.","identity_basis":"none","status":"live","source_refs":["openfda_search"],"source_url":"https://api.fda.gov/food/enforcement.json?search=(recalling_firm:%22NATURAL+STACKS%22+OR+product_description:%22NATURAL+STACKS%22)&limit=5","scope":"search_scope","inference_level":"gap","observed_at":"2026-08-10","presentation_tone":"caution","evidence_id":"ev-69e2d14789ef","evidence_url":"https://lookcloser.ai/e/ev-69e2d14789ef","content_fingerprint":"sha256:89a55ddc0778d805980d9fb89edb670cf7fa8ab679988beabb1d41ff6e4884fa","registry_receipts":[],"evidence":{"summary":"This means only that no enforcement record matched the brand name — it does not mean the product was tested, reviewed, or cleared by FDA. New and untested products also have no recall records.","source_refs":["openfda_search"],"source_records":[{"source":"openfda_search","source_url":"https://api.fda.gov/food/enforcement.json?search=(recalling_firm:%22NATURAL+STACKS%22+OR+product_description:%22NATURAL+STACKS%22)&limit=5","observed_at":"2026-08-10","identity_basis":"search_only","scope":"product_or_brand","registry_name":"FDA enforcement","identifier":"NATURAL STACKS","receipt_label":"FDA enforcement search · NATURAL STACKS"}],"observed_at":"2026-08-10","looked":"LookCloser checked FDA public records.","found":"This means only that no enforcement record matched the brand name — it does not mean the product was tested, reviewed, or cleared by FDA. New and untested products also have no recall records."},"html_anchor":"finding-fda-public-records-recall-search-no-match-found-as-of-aug-10-2026","report_url":"https://lookcloser.ai/p/700598638004/full#finding-fda-public-records-recall-search-no-match-found-as-of-aug-10-2026"},{"id":"keepa-exact-listing-history-this-item-belongs-to-a-catalog-variation-fam","source":"Keepa exact-listing history","class":"gap","noted":false,"severity":"info","weight":19,"headline":"This item belongs to a catalog variation family","detail":"The paid catalog links this exact item to a parent listing. Review counts on public product pages may be shared across sizes, flavors, or other variants, so the count history is listing context — not evidence that reviewers received or tested this exact variant.","proof":"The paid catalog links this exact item to a parent listing. Review counts on public product pages may be shared across sizes, flavors, or other variants, so the count history is listing context — not evidence that reviewers received or tested this exact variant.","identity_basis":"listing","status":"live","source_refs":["keepa_history","source_listing"],"source_url":"https://keepa.com/#!product/1-B00HZWHGJ4","scope":"exact_listing","inference_level":"gap","observed_at":"2026-08-10","presentation_tone":"gap","evidence_id":"ev-f417ff6d670d","evidence_url":"https://lookcloser.ai/e/ev-f417ff6d670d","content_fingerprint":"sha256:52ec11489203bbdff50e823544ce1b0470f9a87f4fcbbfc0b315695f6ba5106e","registry_receipts":[],"evidence":{"summary":"The paid catalog links this exact item to a parent listing. Review counts on public product pages may be shared across sizes, flavors, or other variants, so the count history is listing context — not evidence that reviewers received or tested this exact variant.","source_refs":["keepa_history","source_listing"],"source_records":[{"source":"keepa_history","source_url":"https://keepa.com/#!product/1-B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-10","looked":"LookCloser checked Keepa exact-listing history.","found":"The paid catalog links this exact item to a parent listing. Review counts on public product pages may be shared across sizes, flavors, or other variants, so the count history is listing context — not evidence that reviewers received or tested this exact variant."},"html_anchor":"finding-keepa-exact-listing-history-this-item-belongs-to-a-catalog-variation-fam","report_url":"https://lookcloser.ai/p/700598638004/full#finding-keepa-exact-listing-history-this-item-belongs-to-a-catalog-variation-fam"},{"id":"keepa-exact-listing-history-180-day-review-count-history-is-on-file","source":"Keepa exact-listing history","class":"gap","noted":false,"severity":"info","weight":16,"headline":"180-day review-count history is on file","detail":"Exact-listing history records written-review counts from 657 on 2025-07-07 to 730 on 2026-07-15 (net +73). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic.","proof":"Exact-listing history records written-review counts from 657 on 2025-07-07 to 730 on 2026-07-15 (net +73). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic.","identity_basis":"listing","status":"live","source_refs":["keepa_history","source_listing"],"source_url":"https://keepa.com/#!product/1-B00HZWHGJ4","scope":"exact_listing","inference_level":"gap","observed_at":"2026-08-10","presentation_tone":"gap","evidence_id":"ev-73d894283b42","evidence_url":"https://lookcloser.ai/e/ev-73d894283b42","content_fingerprint":"sha256:9ab74af89da7e0d5457c939346c2427a85a96497c254a008dada1c66616e10ad","registry_receipts":[],"evidence":{"summary":"Exact-listing history records written-review counts from 657 on 2025-07-07 to 730 on 2026-07-15 (net +73). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic.","source_refs":["keepa_history","source_listing"],"source_records":[{"source":"keepa_history","source_url":"https://keepa.com/#!product/1-B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-10","looked":"LookCloser checked Keepa exact-listing history.","found":"Exact-listing history records written-review counts from 657 on 2025-07-07 to 730 on 2026-07-15 (net +73). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic."},"html_anchor":"finding-keepa-exact-listing-history-180-day-review-count-history-is-on-file","report_url":"https://lookcloser.ai/p/700598638004/full#finding-keepa-exact-listing-history-180-day-review-count-history-is-on-file"},{"id":"lookcloser-record-check-brand-ownership-record-not-retained","source":"LookCloser record check","class":"gap","noted":false,"severity":"info","weight":14,"headline":"Brand ownership record not retained","detail":"This record does not hold an exact, supplement-class public ownership record for the brand. That is a LookCloser coverage gap, not evidence that the brand has no owner or that the product is improper.","proof":"This record does not hold an exact, supplement-class public ownership record for the brand. That is a LookCloser coverage gap, not evidence that the brand has no owner or that the product is improper.","identity_basis":"owner_exact","status":"live","source_refs":["uspto_search"],"source_url":"https://tmsearch.uspto.gov/","scope":"brand_owner","inference_level":"gap","observed_at":"2026-08-10","presentation_tone":"gap","evidence_id":"ev-c4ca7ad0ede6","evidence_url":"https://lookcloser.ai/e/ev-c4ca7ad0ede6","content_fingerprint":"sha256:a2ca0b27928e9c802926165ccb96bb7058e489cb39948de893f48808c358891b","registry_receipts":[],"evidence":{"summary":"This record does not hold an exact, supplement-class public ownership record for the brand. That is a LookCloser coverage gap, not evidence that the brand has no owner or that the product is improper.","source_refs":["uspto_search"],"source_records":[{"source":"uspto_search","source_url":"https://tmsearch.uspto.gov/","observed_at":"2026-08-10","identity_basis":"exact_wordmark_and_supplement_goods","scope":"brand","registry_name":"USPTO"}],"observed_at":"2026-08-10","looked":"LookCloser checked LookCloser record check.","found":"This record does not hold an exact, supplement-class public ownership record for the brand. That is a LookCloser coverage gap, not evidence that the brand has no owner or that the product is improper."},"html_anchor":"finding-lookcloser-record-check-brand-ownership-record-not-retained","report_url":"https://lookcloser.ai/p/700598638004/full#finding-lookcloser-record-check-brand-ownership-record-not-retained"}],"evidence_records":[{"evidence_id":"ev-be6efa3491da","record_id":"700598638004","gtin":"700598638004","claim_key":"finding:brand-storefront-same-barcode-on-the-brand-s-own-store","primary_source":"brand_store","claim":"Same barcode on the brand's own store","bucket":"checks_out","looked":"LookCloser checked Brand storefront.","found":"The brand's store lists this exact barcode as “MagTech® Magnesium” (variant: 90ct) — identity confirmed across retailer listings.","proof":{"detail":"The brand's store lists this exact barcode as “MagTech® Magnesium” (variant: 90ct) — identity confirmed across retailer listings."},"source_refs":[{"source":"brand_store","source_url":"https://naturalstacks.com/products/magtech","observed_at":"2026-08-10","identity_basis":"exact_gtin","scope":"brand_or_exact_product"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:0ace8e831043559fc27881c32108941d6571a7260d89e0665f4e780ad3fa12f6","evidence_url":"https://lookcloser.ai/e/ev-be6efa3491da"},{"evidence_id":"ev-b0c2ff4496a5","record_id":"700598638004","gtin":"700598638004","claim_key":"finding:barcode-gtin-record-upc-independently-corroborated","primary_source":"barcode_search","claim":"UPC independently corroborated","bucket":"checks_out","looked":"LookCloser checked Barcode / GTIN record.","found":"UPCitemdb resolves 700598638004 to \"Natural Stacks MagTech Magnesium Supplement - Magtein Magnesium L-Threonate for \" (Natural Stacks) — consistent with this listing.","proof":{"detail":"UPCitemdb resolves 700598638004 to \"Natural Stacks MagTech Magnesium Supplement - Magtein Magnesium L-Threonate for \" (Natural Stacks) — consistent with this listing."},"source_refs":[{"source":"barcode_search","source_url":"https://world.openfoodfacts.org/product/00700598638004","observed_at":"2026-08-10","identity_basis":"gtin","scope":"exact_gtin"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:c7cd95c74e09dcf5d251a9eebfbec31f0f7949b15b9ad3f3437666bd0af3af50","evidence_url":"https://lookcloser.ai/e/ev-b0c2ff4496a5"},{"evidence_id":"ev-7de6b6fbc184","record_id":"700598638004","gtin":"700598638004","claim_key":"finding:nih-published-research-each-ingredient-s-amount-is-disclosed","primary_source":"nih_ods_magnesium","claim":"Each ingredient’s amount is disclosed","bucket":"checks_out","looked":"LookCloser checked NIH / published research.","found":"The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.","proof":{"detail":"The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research."},"source_refs":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:0fe75c54e164ce449796af3abc189b89455cc9538ed7069ab51b42eea47233a9","evidence_url":"https://lookcloser.ai/e/ev-7de6b6fbc184"},{"evidence_id":"ev-69e2d14789ef","record_id":"700598638004","gtin":"700598638004","claim_key":"finding:fda-public-records-recall-search-no-match-found-as-of-aug-10-2026","primary_source":"openfda_search","claim":"Recall search: no match found (as of Aug 10, 2026)","bucket":"unverified","looked":"LookCloser checked FDA public records.","found":"This means only that no enforcement record matched the brand name — it does not mean the product was tested, reviewed, or cleared by FDA. New and untested products also have no recall records.","proof":{"detail":"This means only that no enforcement record matched the brand name — it does not mean the product was tested, reviewed, or cleared by FDA. New and untested products also have no recall records."},"source_refs":[{"source":"openfda_search","source_url":"https://api.fda.gov/food/enforcement.json?search=(recalling_firm:%22NATURAL+STACKS%22+OR+product_description:%22NATURAL+STACKS%22)&limit=5","observed_at":"2026-08-10","identity_basis":"search_only","scope":"product_or_brand","registry_name":"FDA enforcement","identifier":"NATURAL STACKS","receipt_label":"FDA enforcement search · NATURAL STACKS"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:89a55ddc0778d805980d9fb89edb670cf7fa8ab679988beabb1d41ff6e4884fa","evidence_url":"https://lookcloser.ai/e/ev-69e2d14789ef"},{"evidence_id":"ev-6dead6de1468","record_id":"700598638004","gtin":"700598638004","claim_key":"finding:label-and-serving-arithmetic-listing-claim-matches-the-supplement-facts-","primary_source":"facts_panel","claim":"Listing claim matches the Supplement Facts panel","bucket":"unverified","looked":"LookCloser checked Label and serving arithmetic.","found":"The listing claims 200 mg; the photo-read Supplement Facts panel shows Magnesium at 200 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.","proof":{"detail":"The listing claims 200 mg; the photo-read Supplement Facts panel shows Magnesium at 200 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing."},"source_refs":[{"source":"facts_panel","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:9cf5e6174bc9bc092afe005505ae2ca4c7a853e3d4f845e16b35d5f898083b5b","evidence_url":"https://lookcloser.ai/e/ev-6dead6de1468"},{"evidence_id":"ev-21fdc406ad58","record_id":"700598638004","gtin":"700598638004","claim_key":"finding:label-and-serving-arithmetic-public-label-filing-not-retained","primary_source":"facts_panel","claim":"Public label filing not retained","bucket":"unverified","looked":"LookCloser checked Label and serving arithmetic.","found":"We have not found a public label filing for this exact product. That is a gap in our records, not evidence that no filing exists.","proof":{"detail":"We have not found a public label filing for this exact product. That is a gap in our records, not evidence that no filing exists."},"source_refs":[{"source":"facts_panel","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:cef571ff517f1a882dd204117bae56c0b432014ad700f3127fc4c2539cf6b5ff","evidence_url":"https://lookcloser.ai/e/ev-21fdc406ad58"},{"evidence_id":"ev-73d894283b42","record_id":"700598638004","gtin":"700598638004","claim_key":"finding:keepa-exact-listing-history-180-day-review-count-history-is-on-file","primary_source":"keepa_history","claim":"180-day review-count history is on file","bucket":"unverified","looked":"LookCloser checked Keepa exact-listing history.","found":"Exact-listing history records written-review counts from 657 on 2025-07-07 to 730 on 2026-07-15 (net +73). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic.","proof":{"detail":"Exact-listing history records written-review counts from 657 on 2025-07-07 to 730 on 2026-07-15 (net +73). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic."},"source_refs":[{"source":"keepa_history","source_url":"https://keepa.com/#!product/1-B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:9ab74af89da7e0d5457c939346c2427a85a96497c254a008dada1c66616e10ad","evidence_url":"https://lookcloser.ai/e/ev-73d894283b42"},{"evidence_id":"ev-f417ff6d670d","record_id":"700598638004","gtin":"700598638004","claim_key":"finding:keepa-exact-listing-history-this-item-belongs-to-a-catalog-variation-fam","primary_source":"keepa_history","claim":"This item belongs to a catalog variation family","bucket":"unverified","looked":"LookCloser checked Keepa exact-listing history.","found":"The paid catalog links this exact item to a parent listing. Review counts on public product pages may be shared across sizes, flavors, or other variants, so the count history is listing context — not evidence that reviewers received or tested this exact variant.","proof":{"detail":"The paid catalog links this exact item to a parent listing. Review counts on public product pages may be shared across sizes, flavors, or other variants, so the count history is listing context — not evidence that reviewers received or tested this exact variant."},"source_refs":[{"source":"keepa_history","source_url":"https://keepa.com/#!product/1-B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:52ec11489203bbdff50e823544ce1b0470f9a87f4fcbbfc0b315695f6ba5106e","evidence_url":"https://lookcloser.ai/e/ev-f417ff6d670d"},{"evidence_id":"ev-24cb5dc0553f","record_id":"700598638004","gtin":"700598638004","claim_key":"finding:nih-published-research-magnesium-amount-in-daily-intake-context","primary_source":"nih_ods_magnesium","claim":"Magnesium amount, in daily-intake context","bucket":"unverified","looked":"LookCloser checked NIH / published research.","found":"label states 200 mg/serving — about 48% of the adult daily reference (adult RDA 310–420 mg elemental; NIH sets 350 mg/day as the supplemental upper level for elemental magnesium). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate labels (glycinate, citrate) often state compound mass, which reads ~5–7× higher than elemental magnesium — the Supplement Facts panel settles which is meant. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation.","proof":{"detail":"label states 200 mg/serving — about 48% of the adult daily reference (adult RDA 310–420 mg elemental; NIH sets 350 mg/day as the supplemental upper level for elemental magnesium). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate labels (glycinate, citrate) often state compound mass, which reads ~5–7× higher than elemental magnesium — the Supplement Facts panel settles which is meant. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation."},"source_refs":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:da9ebf5081fdb3c90c76d6110c99e1f9e0b5c96455b0af4c391f246cb3a5b4f3","evidence_url":"https://lookcloser.ai/e/ev-24cb5dc0553f"},{"evidence_id":"ev-c485ae8f80f4","record_id":"700598638004","gtin":"700598638004","claim_key":"finding:nih-published-research-research-context-is-available-for-the-listed-ingr","primary_source":"nih_ods_magnesium","claim":"Research context is available for the listed ingredients","bucket":"unverified","looked":"LookCloser checked NIH / published research.","found":"Published sources describe how magnesium have been studied. This is ingredient context only; the record does not establish that this product delivers the studied dose or outcome. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation.","proof":{"detail":"Published sources describe how magnesium have been studied. This is ingredient context only; the record does not establish that this product delivers the studied dose or outcome. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation."},"source_refs":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:8baccbe85a31119ba6fa3b6251b43f0ab9d9bdc65d51641691c9ab76f9fb5228","evidence_url":"https://lookcloser.ai/e/ev-c485ae8f80f4"},{"evidence_id":"ev-bef44a10aaca","record_id":"700598638004","gtin":"700598638004","claim_key":"finding:nih-published-research-reaching-a-studied-dose-costs-about-34-month","primary_source":"nih_ods_magnesium","claim":"Reaching a studied dose costs about $34/month","bucket":"unverified","looked":"LookCloser checked NIH / published research.","found":"At 1.0 serving(s) a day to reach the low end of the studied range (200–420 mg), this product runs roughly $34 per month. A price observation, not a recommendation.","proof":{"detail":"At 1.0 serving(s) a day to reach the low end of the studied range (200–420 mg), this product runs roughly $34 per month. A price observation, not a recommendation."},"source_refs":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:c2005e02ab754be737a5dadae6a1989e79e997c370bc1f66bf8190319986fefc","evidence_url":"https://lookcloser.ai/e/ev-bef44a10aaca"},{"evidence_id":"ev-c4ca7ad0ede6","record_id":"700598638004","gtin":"700598638004","claim_key":"finding:lookcloser-record-check-brand-ownership-record-not-retained","primary_source":"uspto_search","claim":"Brand ownership record not retained","bucket":"unverified","looked":"LookCloser checked LookCloser record check.","found":"This record does not hold an exact, supplement-class public ownership record for the brand. That is a LookCloser coverage gap, not evidence that the brand has no owner or that the product is improper.","proof":{"detail":"This record does not hold an exact, supplement-class public ownership record for the brand. That is a LookCloser coverage gap, not evidence that the brand has no owner or that the product is improper."},"source_refs":[{"source":"uspto_search","source_url":"https://tmsearch.uspto.gov/","observed_at":"2026-08-10","identity_basis":"exact_wordmark_and_supplement_goods","scope":"brand","registry_name":"USPTO"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:a2ca0b27928e9c802926165ccb96bb7058e489cb39948de893f48808c358891b","evidence_url":"https://lookcloser.ai/e/ev-c4ca7ad0ede6"},{"evidence_id":"ev-1c512b8a0714","record_id":"700598638004","gtin":"700598638004","claim_key":"claim:clinical","primary_source":"source_listing","claim":"“features Magtein Magnesium L-Threonate which is highly absorbed for optimal benefits and the best clinically tested magnesium”","bucket":"claimed_no_support","looked":"a named, citable clinical study of this product or formula","found":"We found no named, citable study of this product or formula. The claim may rest on ingredient research rather than a trial of this product.","proof":{"kind":"clinical","status":"not-substantiated","snippet":"…It features Magtein Magnesium L-Threonate which is highly absorbed for optimal benefits and the best clinically tested magnesium supplement.…"},"source_refs":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:d63ed65909080821b7f878f8a1a9b452b36a8742fd478cee65e3e06df2a84f86","evidence_url":"https://lookcloser.ai/e/ev-1c512b8a0714"},{"evidence_id":"ev-4cf1f9687805","record_id":"700598638004","gtin":"700598638004","claim_key":"claim:efficacy","primary_source":"source_listing","claim":"“also supports brain health and may improve sleep”","bucket":"partly","looked":"whether the ingredient doses on the label match the doses used in published research","found":"Ingredient evidence exists; on dose: label states 200 mg/serving — about 48% of the adult daily reference (adult RDA 310–420 mg elemental; NIH sets 350 mg/day as the supplemental upper level for elemental magnesium). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate labels (glycinate, citrate) often state compound mass, which reads ~5–7× higher than elemental magnesium — the Supplement Facts panel settles which is meant.","proof":{"kind":"efficacy","status":"partly","snippet":"…Magnesium also supports brain health and may improve sleep quality…"},"source_refs":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-10","content_fingerprint":"sha256:16dc83ae4554fe31e995e79740365d6c85425145f93c4022361b270b1b3fbc1f","evidence_url":"https://lookcloser.ai/e/ev-4cf1f9687805"}],"label_math":{"verdict":"UNKNOWN","claimed_subject":"magnesium","claimed_mg":200,"serving_mass_mg":null,"percent_of_serving":null,"serving_mass_source":null,"ambiguity":null,"declared_actives_total_mg":2520,"headline_claim_mg":200,"headline_subject":"magnesium","subject_actual_mg":200},"listing_claims":{"dose_claims":[{"subject":"magnesium","amount_mg":200,"basis":"per_serving"}],"testing":{"claimed":false,"named_lab_or_certifier":false},"container":{"units":90,"servings":null,"pack_count":1,"units_conflict":false},"marketing_text":["ADVANCED 3-IN-1 COMPLEX","FOR RELAXATION & BRAIN HEALTH","200mg Magnesium Per Serving","DIETARY SUPPLEMENT","NOT ALL MAGNESIUM IS CREATED EQUAL","Magtein™ (Magnesium L-Threonate) is highly absorbed for optimal benefits.*","It also supports cognitive function, and may support learning and memory.*","Magnesium Glycinate is a compound formed by combining Magnesium and Glycine. Increasing brain magnesium values may impro","Magnesium Taurate is a compound formed by combining Magnesium and Taurine. Increasing brain magnesium values has been sh","MAGTECH® Magnesium (90 ct) is the best-selling Cognitive Health Supplement in the Natural Channel"],"certification_text":["Magtein","GLUTEN FREE","NON GMO","VEGAN","PALEO FRIENDLY"],"claim_checks":[{"kind":"clinical","label":"Clinical-evidence claim","snippet":"…It features Magtein Magnesium L-Threonate which is highly absorbed for optimal benefits and the best clinically tested magnesium supplement.…","looked":"a named, citable clinical study of this product or formula","found":"We found no named, citable study of this product or formula. The claim may rest on ingredient research rather than a trial of this product.","status":"not-substantiated"},{"kind":"efficacy","label":"Benefit claim","snippet":"…Magnesium also supports brain health and may improve sleep quality…","looked":"whether the ingredient doses on the label match the doses used in published research","found":"Ingredient evidence exists; on dose: label states 200 mg/serving — about 48% of the adult daily reference (adult RDA 310–420 mg elemental; NIH sets 350 mg/day as the supplemental upper level for elemental magnesium). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate labels (glycinate, citrate) often state compound mass, which reads ~5–7× higher than elemental magnesium — the Supplement Facts panel settles which is meant.","status":"partly"}],"identity_basis":"source_listing_and_identity_bound_label"},"facts_panel_status":"captured","label_photo_read":{"src":"vision:claude-cli:subscription","reader_version":"2026-07-27.1","images_read":8,"raw_reads":[{"img":0,"model":"claude-cli:subscription","text":"{\"brand\": \"NATURAL STACKS\", \"product_name\": \"MAGTECH® MAGNESIUM\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": \"90 Vegan Capsules\", \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"ADVANCED 3-IN-1 COMPLEX\", \"FOR RELAXATION & BRAIN HEALTH\", \"200mg Magnesium Per Serving\", \"DIETARY SUPPLEMENT\"], \"certifications\": [\"Magtein\"]}\n"},{"img":1,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"NATURAL STACKS\", \"product_name\": \"Magtech\\u00ae Magnesium\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": null, \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"NOT ALL MAGNESIUM IS CREATED EQUAL\", \"Magtein\\u2122 (Magnesium L-Threonate) is highly absorbed for optimal benefits.*\", \"It also supports cognitive function, and may support learning and memory.*\", \"Magnesium Glycinate is a compound formed by combining Magnesium and Glycine. Increasing brain magnesium values may improve sleep quality.*\", \"Magnesium Taurate is a compound formed by combining Magnesium and Taurine. Increasing brain magnesium values has been shown to promote relaxation.*\"], \"certifications\": []}\n```\n"},{"img":2,"model":"claude-cli:subscription","text":"{\"brand\": \"NATURAL STACKS\", \"product_name\": \"MAGTECH MAGNESIUM\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": 60, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": \"90 ct\", \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"MAGTECH\\u00ae Magnesium (90 ct) is the best-selling Cognitive Health Supplement in the Natural Channel\", \"#1 SELLER\", \"ADVANCED 3-IN-1 COMPLEX\", \"FOR RELAXATION & BRAIN HEALTH\", \"60 SERVINGS\", \"FOR RESTFUL SLEEP\"], \"certifications\": []}\n"},{"img":3,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"NATURAL STACKS\", \"product_name\": \"MAGTECH MAGNESIUM\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": \"90 VEGAN CAPSULES\", \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"ADVANCED 3-IN-1 COMPLEX\", \"FOR RELAXATION & BRAIN HEALTH\", \"3-IN-1 Mg COMPLEX\", \"CLINICALLY-TESTED MAGTEIN\\u2122\", \"THIRD-PARTY LAB TESTED\", \"200mg OF Mg\"], \"certifications\": []}\n```\n"},{"img":4,"model":"claude-cli:subscription","text":"{\"brand\": \"NATURAL STACKS\", \"product_name\": \"MAGTECH MAGNESIUM\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": \"90 VEGAN CAPSULES\", \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"200mg Elemental Magnesium per serving\", \"ADVANCED 3-IN-1 COMPLEX\", \"FOR RELAXATION & BRAIN HEALTH\", \"DIETARY SUPPLEMENT\"], \"certifications\": [\"Magtein\"]}\n"},{"img":5,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"NATURAL STACKS\", \"product_name\": \"MAGTECH MAGNESIUM\", \"barcode\": null, \"panel\": true, \"serving_size_text\": \"Serving Size: 3 Capsules\", \"serving_size_g\": null, \"servings_per_container\": 30, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": \"90 VEGAN CAPSULES\", \"responsible_parties\": [{\"role\": \"distributed_by\", \"name\": \"AIDP, Inc.\", \"address\": null, \"verbatim\": \"Magtein\\u2122 is a trademark of Magceutics, Inc. and is distributed exclusively by AIDP, Inc.\"}], \"websites\": [], \"actives\": [{\"name\": \"Magnesium\", \"amount\": \"200\", \"unit\": \"mg\"}, {\"name\": \"from 1000 mg Magtein\\u2122 Magnesium L-Threonate\", \"amount\": \"1000\", \"unit\": \"mg\"}, {\"name\": \"from 690 mg Magnesium Glycinate\", \"amount\": \"690\", \"unit\": \"mg\"}, {\"name\": \"from 630 mg Magnesium Taurate\", \"amount\": \"630\", \"unit\": \"mg\"}], \"label_claims\": [\"ADVANCED 3-IN-1 COMPLEX\", \"FOR RELAXATION & BRAIN HEALTH\", \"Quality with: Magtein\", \"MagTech\\u00ae has three forms of chelated magnesium.\", \"Take 1-2 servings per day, preferably in the afternoon and/or evening, or as directed by a healthcare practitioner.\", \"DIETARY SUPPLEMENT\"], \"certifications\": [\"GLUTEN FREE\", \"NON GMO\", \"VEGAN\", \"PALEO FRIENDLY\"]}\n```\n"},{"img":6,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"Natural Stacks\", \"product_name\": \"MagTech Magnesium\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": null, \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"CUSTOMIZED FOR YOU\", \"ADVANCED 3-IN-1 COMPLEX\", \"FOR RELAXATION & BRAIN HEALTH\", \"60 SERVINGS\", \"Precise dosage, down to the capsule\", \"Portable, on-the-go stick packs\"], \"certifications\": []}\n```\n"},{"img":7,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"NATURAL STACKS\", \"product_name\": \"MagTech® Magnesium\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": null, \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"Advanced 3-In-1 Formula\", \"Magnesium Glycinate Sleep Quality*\", \"Magtein™ Magnesium L-Threonate Brain Health*\", \"Magnesium Taurate Relaxation and REM Sleep*\", \"*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.\"], \"certifications\": []}\n```\n"}],"source_images":["https://m.media-amazon.com/images/I/61JatFea35L.jpg","https://m.media-amazon.com/images/I/712g4v60dBL.jpg","https://m.media-amazon.com/images/I/81zcET1rJKL.jpg","https://m.media-amazon.com/images/I/7116VBHI4SL.jpg","https://m.media-amazon.com/images/I/71cUkOzoRkL.jpg","https://m.media-amazon.com/images/I/71RmgBefydL.jpg","https://m.media-amazon.com/images/I/71dUbIuxrwL.jpg","https://m.media-amazon.com/images/I/61pHmuHwrVL.jpg"],"facts_panel_image":5,"brand":"NATURAL STACKS","product_name":"MAGTECH MAGNESIUM","barcode":null,"barcode_identity_status":"unreadable_or_absent","serving_size_text":"Serving Size: 3 Capsules","serving_size_g":null,"servings_per_container":30,"net_weight_text":null,"net_weight_g":null,"unit_count_text":"90 Vegan Capsules","actives":[{"name":"Magnesium","amount":"200","unit":"mg"},{"name":"from 1000 mg Magtein™ Magnesium L-Threonate","amount":"1000","unit":"mg"},{"name":"from 690 mg Magnesium Glycinate","amount":"690","unit":"mg"},{"name":"from 630 mg Magnesium Taurate","amount":"630","unit":"mg"}],"responsible_parties":[{"role":"distributed_by","name":"AIDP, Inc.","address":null,"verbatim":"Magtein™ is a trademark of Magceutics, Inc. and is distributed exclusively by AIDP, Inc."}],"websites":[],"label_claims":["ADVANCED 3-IN-1 COMPLEX","FOR RELAXATION & BRAIN HEALTH","200mg Magnesium Per Serving","DIETARY SUPPLEMENT","NOT ALL MAGNESIUM IS CREATED EQUAL","Magtein™ (Magnesium L-Threonate) is highly absorbed for optimal benefits.*","It also supports cognitive function, and may support learning and memory.*","Magnesium Glycinate is a compound formed by combining Magnesium and Glycine. Increasing brain magnesium values may impro","Magnesium Taurate is a compound formed by combining Magnesium and Taurine. Increasing brain magnesium values has been sh","MAGTECH® Magnesium (90 ct) is the best-selling Cognitive Health Supplement in the Natural Channel"],"certifications":["Magtein","GLUTEN FREE","NON GMO","VEGAN","PALEO FRIENDLY"],"panel_rows":[{"name":"Magnesium","amount":"200","unit":"mg"},{"name":"from 1000 mg Magtein™ Magnesium L-Threonate","amount":"1000","unit":"mg"},{"name":"from 690 mg Magnesium Glycinate","amount":"690","unit":"mg"},{"name":"from 630 mg Magnesium Taurate","amount":"630","unit":"mg"}]},"resolved_facts_panel":{"src":"vision:claude-cli:subscription","reader_version":"2026-07-27.1","images_read":8,"raw_reads":[{"img":0,"model":"claude-cli:subscription","text":"{\"brand\": \"NATURAL STACKS\", \"product_name\": \"MAGTECH® MAGNESIUM\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": \"90 Vegan Capsules\", \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"ADVANCED 3-IN-1 COMPLEX\", \"FOR RELAXATION & BRAIN HEALTH\", \"200mg Magnesium Per Serving\", \"DIETARY SUPPLEMENT\"], \"certifications\": [\"Magtein\"]}\n"},{"img":1,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"NATURAL STACKS\", \"product_name\": \"Magtech\\u00ae Magnesium\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": null, \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"NOT ALL MAGNESIUM IS CREATED EQUAL\", \"Magtein\\u2122 (Magnesium L-Threonate) is highly absorbed for optimal benefits.*\", \"It also supports cognitive function, and may support learning and memory.*\", \"Magnesium Glycinate is a compound formed by combining Magnesium and Glycine. Increasing brain magnesium values may improve sleep quality.*\", \"Magnesium Taurate is a compound formed by combining Magnesium and Taurine. Increasing brain magnesium values has been shown to promote relaxation.*\"], \"certifications\": []}\n```\n"},{"img":2,"model":"claude-cli:subscription","text":"{\"brand\": \"NATURAL STACKS\", \"product_name\": \"MAGTECH MAGNESIUM\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": 60, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": \"90 ct\", \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"MAGTECH\\u00ae Magnesium (90 ct) is the best-selling Cognitive Health Supplement in the Natural Channel\", \"#1 SELLER\", \"ADVANCED 3-IN-1 COMPLEX\", \"FOR RELAXATION & BRAIN HEALTH\", \"60 SERVINGS\", \"FOR RESTFUL SLEEP\"], \"certifications\": []}\n"},{"img":3,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"NATURAL STACKS\", \"product_name\": \"MAGTECH MAGNESIUM\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": \"90 VEGAN CAPSULES\", \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"ADVANCED 3-IN-1 COMPLEX\", \"FOR RELAXATION & BRAIN HEALTH\", \"3-IN-1 Mg COMPLEX\", \"CLINICALLY-TESTED MAGTEIN\\u2122\", \"THIRD-PARTY LAB TESTED\", \"200mg OF Mg\"], \"certifications\": []}\n```\n"},{"img":4,"model":"claude-cli:subscription","text":"{\"brand\": \"NATURAL STACKS\", \"product_name\": \"MAGTECH MAGNESIUM\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": \"90 VEGAN CAPSULES\", \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"200mg Elemental Magnesium per serving\", \"ADVANCED 3-IN-1 COMPLEX\", \"FOR RELAXATION & BRAIN HEALTH\", \"DIETARY SUPPLEMENT\"], \"certifications\": [\"Magtein\"]}\n"},{"img":5,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"NATURAL STACKS\", \"product_name\": \"MAGTECH MAGNESIUM\", \"barcode\": null, \"panel\": true, \"serving_size_text\": \"Serving Size: 3 Capsules\", \"serving_size_g\": null, \"servings_per_container\": 30, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": \"90 VEGAN CAPSULES\", \"responsible_parties\": [{\"role\": \"distributed_by\", \"name\": \"AIDP, Inc.\", \"address\": null, \"verbatim\": \"Magtein\\u2122 is a trademark of Magceutics, Inc. and is distributed exclusively by AIDP, Inc.\"}], \"websites\": [], \"actives\": [{\"name\": \"Magnesium\", \"amount\": \"200\", \"unit\": \"mg\"}, {\"name\": \"from 1000 mg Magtein\\u2122 Magnesium L-Threonate\", \"amount\": \"1000\", \"unit\": \"mg\"}, {\"name\": \"from 690 mg Magnesium Glycinate\", \"amount\": \"690\", \"unit\": \"mg\"}, {\"name\": \"from 630 mg Magnesium Taurate\", \"amount\": \"630\", \"unit\": \"mg\"}], \"label_claims\": [\"ADVANCED 3-IN-1 COMPLEX\", \"FOR RELAXATION & BRAIN HEALTH\", \"Quality with: Magtein\", \"MagTech\\u00ae has three forms of chelated magnesium.\", \"Take 1-2 servings per day, preferably in the afternoon and/or evening, or as directed by a healthcare practitioner.\", \"DIETARY SUPPLEMENT\"], \"certifications\": [\"GLUTEN FREE\", \"NON GMO\", \"VEGAN\", \"PALEO FRIENDLY\"]}\n```\n"},{"img":6,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"Natural Stacks\", \"product_name\": \"MagTech Magnesium\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": null, \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"CUSTOMIZED FOR YOU\", \"ADVANCED 3-IN-1 COMPLEX\", \"FOR RELAXATION & BRAIN HEALTH\", \"60 SERVINGS\", \"Precise dosage, down to the capsule\", \"Portable, on-the-go stick packs\"], \"certifications\": []}\n```\n"},{"img":7,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"NATURAL STACKS\", \"product_name\": \"MagTech® Magnesium\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": null, \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"Advanced 3-In-1 Formula\", \"Magnesium Glycinate Sleep Quality*\", \"Magtein™ Magnesium L-Threonate Brain Health*\", \"Magnesium Taurate Relaxation and REM Sleep*\", \"*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.\"], \"certifications\": []}\n```\n"}],"source_images":["https://m.media-amazon.com/images/I/61JatFea35L.jpg","https://m.media-amazon.com/images/I/712g4v60dBL.jpg","https://m.media-amazon.com/images/I/81zcET1rJKL.jpg","https://m.media-amazon.com/images/I/7116VBHI4SL.jpg","https://m.media-amazon.com/images/I/71cUkOzoRkL.jpg","https://m.media-amazon.com/images/I/71RmgBefydL.jpg","https://m.media-amazon.com/images/I/71dUbIuxrwL.jpg","https://m.media-amazon.com/images/I/61pHmuHwrVL.jpg"],"facts_panel_image":5,"brand":"NATURAL STACKS","product_name":"MAGTECH MAGNESIUM","barcode":null,"barcode_identity_status":"unreadable_or_absent","serving_size_text":"Serving Size: 3 Capsules","serving_size_g":null,"servings_per_container":30,"net_weight_text":null,"net_weight_g":null,"unit_count_text":"90 Vegan Capsules","actives":[{"name":"Magnesium","amount":"200","unit":"mg"},{"name":"from 1000 mg Magtein™ Magnesium L-Threonate","amount":"1000","unit":"mg"},{"name":"from 690 mg Magnesium Glycinate","amount":"690","unit":"mg"},{"name":"from 630 mg Magnesium Taurate","amount":"630","unit":"mg"}],"responsible_parties":[{"role":"distributed_by","name":"AIDP, Inc.","address":null,"verbatim":"Magtein™ is a trademark of Magceutics, Inc. and is distributed exclusively by AIDP, Inc."}],"websites":[],"label_claims":["ADVANCED 3-IN-1 COMPLEX","FOR RELAXATION & BRAIN HEALTH","200mg Magnesium Per Serving","DIETARY SUPPLEMENT","NOT ALL MAGNESIUM IS CREATED EQUAL","Magtein™ (Magnesium L-Threonate) is highly absorbed for optimal benefits.*","It also supports cognitive function, and may support learning and memory.*","Magnesium Glycinate is a compound formed by combining Magnesium and Glycine. Increasing brain magnesium values may impro","Magnesium Taurate is a compound formed by combining Magnesium and Taurine. Increasing brain magnesium values has been sh","MAGTECH® Magnesium (90 ct) is the best-selling Cognitive Health Supplement in the Natural Channel"],"certifications":["Magtein","GLUTEN FREE","NON GMO","VEGAN","PALEO FRIENDLY"],"panel_rows":[{"name":"Magnesium","amount":"200","unit":"mg"},{"name":"from 1000 mg Magtein™ Magnesium L-Threonate","amount":"1000","unit":"mg"},{"name":"from 690 mg Magnesium Glycinate","amount":"690","unit":"mg"},{"name":"from 630 mg Magnesium Taurate","amount":"630","unit":"mg"}]},"nih_dsld":null,"ingredient_science":{"ingredients":[{"ingredient":"magnesium","declared_name":"Magnesium","ods_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","medlineplus_url":"https://medlineplus.gov/search/?query=magnesium","pubmed_url":"https://pubmed.ncbi.nlm.nih.gov/?term=%22magnesium%22","ul":350,"ul_unit":"mg","ul_scope":"SUPPLEMENTAL magnesium only (not from food)","pubmed_count":11814}],"ul_exceedances":[],"source":"NIH ODS fact sheets + IOM Dietary Reference Intakes; PubMed E-utilities"},"nsf_certification":null,"brand_documentation_request":null,"plain_summary":null,"fda_recalls":{"count":0},"offers_at_check_time":[["Retailer listing",33.96],["Brand website",36.95]],"price_comparison":{"identity_basis":"upc_gtin","record_gtin":"00700598638004","source_listing_gtin":"00700598638004","retailer_gtin_match":true,"brand_store_gtin_match":true,"seller_identifiers":{"Brand store (naturalstacks.com)":"70-05986-38004"},"same_product_only":true,"offers":[["Amazon",33.96],["Brand website",36.95]],"offer_records":[{"seller":"Amazon","price":33.96,"currency":"USD","url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10T22:13:14.164061+00:00","identity_basis":"exact_gtin","gtin":"00700598638004","rating":null,"price_source":"Keepa","price_type":"lowest_new"},{"seller":"Brand website","price":36.95,"currency":"USD","url":"https://naturalstacks.com/products/magtech","observed_at":"2026-08-10","identity_basis":"exact_gtin","gtin":"00700598638004","rating":{"value":null,"count":689}}],"observed_at":"2026-08-10"},"commerce_context":{"observed_at":"2026-08-10","record_gtin":"00700598638004","source_listing":{"status":"exact_listing","url":"https://www.amazon.com/dp/B00HZWHGJ4","price":33.96,"price_receipt":{"status":"available","amount":33.96,"currency":"USD","price_type":"lowest_new","observed_at":"2026-08-10T22:13:14.164061+00:00","source":"Keepa","source_url":"https://keepa.com/#!product/1-B00HZWHGJ4","listing_url":"https://www.amazon.com/dp/B00HZWHGJ4","identity_basis":"exact_listing_identifier","listing_identifier":"B00HZWHGJ4","raw_cents":3396},"rating":null,"rating_count":null,"published_gtin":"00700598638004"},"brand_site":{"status":"exact_product","host":"https://naturalstacks.com","url":"https://naturalstacks.com/products/magtech","title":"MagTech® Magnesium","variant":"90ct","price":"36.95","availability":"unknown","published_gtin":"70-05986-38004","identity_basis":"exact_gtin","comparison_allowed":true,"candidate_binding":null,"shared_marketing_markers":[],"review_surface":{"status":"found","rating":null,"count":689,"source":"brand product page review distribution","url":"https://naturalstacks.com/products/magtech","observed_at":"2026-08-10"},"testing_surface":{"status":"no_testing_claim_on_product_page","third_party_tested_claim":false,"gmp_claim":false,"named_lab_or_certifier":[],"document_links":[],"source_url":"https://naturalstacks.com/products/magtech","scope":"brand_product_page","meaning":"A published testing statement is a claim until a named issuer or product-bound report can be checked."}},"exact_offers":[{"seller":"Amazon","price":33.96,"currency":"USD","url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10T22:13:14.164061+00:00","identity_basis":"exact_gtin","gtin":"00700598638004","rating":null,"price_source":"Keepa","price_type":"lowest_new"},{"seller":"Brand website","price":36.95,"currency":"USD","url":"https://naturalstacks.com/products/magtech","observed_at":"2026-08-10","identity_basis":"exact_gtin","gtin":"00700598638004","rating":{"value":null,"count":689}}],"external_marketplaces":{"iherb":{"source":"iHerb","status":"eligible_not_checked","identity_basis":"exact_gtin_required","gtin":"00700598638004","search_url":"https://www.iherb.com/search?kw=NATURAL+STACKS+MagTech+Magnesium+Complex+Glycinate%2C+L-Threonate+and+Taurate%2C+90+Capsules"},"target":{"source":"Target","status":"eligible_not_checked","identity_basis":"exact_gtin_required","gtin":"00700598638004","search_url":"https://www.target.com/s?searchTerm=NATURAL+STACKS+MagTech+Magnesium+Complex+Glycinate%2C+L-Threonate+and+Taurate%2C+90+Capsules"},"walmart":{"source":"Walmart","status":"eligible_not_checked","identity_basis":"exact_gtin_required","gtin":"00700598638004","search_url":"https://www.walmart.com/search?q=NATURAL+STACKS+MagTech+Magnesium+Complex+Glycinate%2C+L-Threonate+and+Taurate%2C+90+Capsules"}},"comparison_status":"exact_multi_seller","identity_rule":"Prices and reviews are compared only when both pages publish the same UPC/GTIN."},"brand_store":{"host":"https://naturalstacks.com","sku_count":78,"supp_count":60,"distinct_trend_cats":3,"cats":["creatine","magnesium","nmn"],"specialist":false,"review_surface":{"status":"found","rating":null,"count":689,"source":"brand product page review distribution","url":"https://naturalstacks.com/products/magtech","observed_at":"2026-08-10"},"domain_lookup":{"status":"confirmed","brand":"NATURAL STACKS","host":"https://naturalstacks.com","source_url":"https://naturalstacks.com","identity_basis":"retained_brand_storefront","observed_at":"2026-08-10"}},"brand_review_surface":{"status":"found","rating":null,"count":689,"source":"brand product page review distribution","url":"https://naturalstacks.com/products/magtech","observed_at":"2026-08-10"},"ratings_surface":{"stars":null,"count":null,"observed_at":"2026-08-10","source_ref":"source_listing","identity_basis":"exact_listing_identifier","note":"retailer rating surface; not a product-quality or authenticity verdict"},"review_count_history":{"identity_basis":"exact_listing_identifier","selection_basis":"built_record","demand_reach":null,"rating_count":{"points":[],"summary":null},"written_review_count":{"points":[["2025-07-07",657],["2025-07-21",660],["2025-08-07",663],["2025-08-08",662],["2025-08-28",664],["2025-09-04",665],["2025-09-11",666],["2025-10-14",667],["2025-10-28",668],["2025-11-05",669],["2025-11-12",673],["2025-12-01",674],["2025-12-05",675],["2025-12-23",676],["2025-12-31",677],["2026-01-15",679],["2026-01-25",682],["2026-02-18",687],["2026-03-01",692],["2026-03-15",701],["2026-03-29",703],["2026-04-12",707],["2026-04-26",714],["2026-05-15",716],["2026-05-29",715],["2026-06-13",723],["2026-07-01",725],["2026-07-15",730]],"summary":{"start":["2025-07-07",657],"latest":["2026-07-15",730],"net_change":73,"largest_increase":9,"largest_decrease":-1}},"price_snapshot":{"status":"available","amount":33.96,"currency":"USD","price_type":"lowest_new","observed_at":"2026-08-10T22:13:14.164061+00:00","source":"Keepa","source_url":"https://keepa.com/#!product/1-B00HZWHGJ4","listing_url":"https://www.amazon.com/dp/B00HZWHGJ4","identity_basis":"exact_listing_identifier","listing_identifier":"B00HZWHGJ4","raw_cents":3396},"catalog_snapshot":{"observed_at":"2026-08-10T22:13:14.164061+00:00","listed_since":"2014-01-23","parent_listing_identifier":"B0B67DKY9K","root_category_id":3760901,"category_path":[{"id":3760901,"name":"Health & Household"},{"id":23675621011,"name":"Vitamins, Minerals & Supplements"},{"id":3774271,"name":"Minerals"},{"id":3774411,"name":"Magnesium"}],"brand":"NATURAL STACKS","manufacturer":"NATURAL STACKS","monthly_sold_estimate":5000,"monthly_sold_note":"Source estimate; demand context only, not verified unit sales.","review_counts_last_observed":"2026-07-29","sales_rank_drops":{"30_days":40,"90_days":121,"180_days":372},"out_of_stock_percentage":{"30_days":null,"90_days":null,"180_days":null},"offer_count":1,"context_note":"Rank drops, stockout percentages, offer counts, and monthly-sold values are source observations or estimates; they do not establish product quality."}},"source_registry":{"source_listing":{"type":"product_listing","scope":"exact_listing","observed_at":"2026-08-10","url":"https://www.amazon.com/dp/B00HZWHGJ4","identity_basis":"listing_identifier","limitation":null},"barcode_search":{"type":"barcode_registry_search","scope":"exact_gtin","observed_at":"2026-08-10","url":"https://world.openfoodfacts.org/product/00700598638004","identity_basis":"gtin"},"nih_dsld_search":{"type":"government_label_catalog","scope":"product_label","observed_at":"2026-08-10","url":"https://dsld.od.nih.gov/","identity_basis":"search_only","checked":false,"registry_name":"NIH DSLD","identifier":null,"receipt_label":null},"uspto_search":{"type":"government_trademark_registry","scope":"brand","observed_at":"2026-08-10","url":"https://tmsearch.uspto.gov/","identity_basis":"exact_wordmark_and_supplement_goods","checked":false,"registry_name":"USPTO","identifier":null,"receipt_label":null},"openfda_search":{"type":"government_enforcement_search","scope":"product_or_brand","observed_at":"2026-08-10","url":"https://api.fda.gov/food/enforcement.json?search=(recalling_firm:%22NATURAL+STACKS%22+OR+product_description:%22NATURAL+STACKS%22)&limit=5","identity_basis":"search_only","checked":true,"registry_name":"FDA enforcement","identifier":"NATURAL STACKS","receipt_label":"FDA enforcement search · NATURAL STACKS"},"nsf_search":{"type":"certification_registry_search","scope":"product_or_brand","observed_at":"2026-08-10","url":"https://info.nsf.org/Certified/dietary/","identity_basis":"search_only","checked":false,"registry_name":"NSF","standard":null,"identifier":null,"receipt_label":null},"keepa_history":{"type":"paid_catalog_history","scope":"exact_listing","observed_at":"2026-08-10","url":"https://keepa.com/#!product/1-B00HZWHGJ4","identity_basis":"exact_listing_identifier"},"facts_panel":{"type":"image_read_supplement_facts","scope":"exact_listing","observed_at":"2026-08-10","url":"https://www.amazon.com/dp/B00HZWHGJ4","identity_basis":"listing_identifier","limitation":null},"brand_store":{"type":"brand_storefront","scope":"brand_or_exact_product","observed_at":"2026-08-10","url":"https://naturalstacks.com/products/magtech","identity_basis":"exact_gtin","comparison_allowed":true,"limitation":null},"brand_review_surface":{"type":"brand_store_review_aggregate","scope":"exact_product","observed_at":"2026-08-10","url":"https://naturalstacks.com/products/magtech","identity_basis":"exact_gtin","comparison_allowed":true,"limitation":"Aggregate and star distribution only; review text is not retained. A skewed distribution is a curation signal, not proof of fabrication."},"nih_ods_magnesium":{"type":"government_ingredient_reference","scope":"ingredient","observed_at":"2026-08-10","url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","identity_basis":"named_ingredient","checked":true,"registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},"pubmed_magnesium":{"type":"research_index","scope":"ingredient","observed_at":"2026-08-10","url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","identity_basis":"named_ingredient"}},"decision_support":{"disclosure":{"status":"amounts_disclosed","summary":"All 4 captured rows publish an amount.","captured_rows":4,"quantified_rows":4,"separately_quantified_rows":4,"combined_blend_rows":[],"integrity_tells":[],"derived_from":["facts_panel"]},"identity_convergence":{"gtin":"00700598638004","confirmations":["source_listing_gtin","external_barcode_record","brand_store_gtin"],"confirmation_count":3,"summary":"3 source(s) matched to this exact product agree on its identity.","not_a_quality_score":true},"research_coverage":{"panel_rows":4,"ingredients_with_reference_context":1,"exact_product_dose_comparisons":1,"dose_comparison_finding_ids":["nih-published-research-reaching-a-studied-dose-costs-about-34-month"],"blend_limits_dose_comparison":false,"limitation":"Ingredient context is not product efficacy evidence."},"review_trajectory":{"status":"observed","start":{"date":"2025-07-07","count":657},"latest":{"date":"2026-07-15","count":730},"net_change":73,"span_days":373,"average_change_per_30_days":5.9,"largest_single_interval_increase":9,"identity_basis":"exact_listing_identifier","limitation":"Count movement does not establish review authenticity; variation families may share counts."},"review_surface_comparison":null,"market":{"offers":[{"seller":"Amazon","price":33.96,"currency":"USD","url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10T22:13:14.164061+00:00","identity_basis":"exact_gtin","gtin":"00700598638004","rating":null,"price_source":"Keepa","price_type":"lowest_new","price_per_labeled_serving":1.13},{"seller":"Brand website","price":36.95,"currency":"USD","url":"https://naturalstacks.com/products/magtech","observed_at":"2026-08-10","identity_basis":"exact_gtin","gtin":"00700598638004","rating":{"value":null,"count":689},"price_per_labeled_serving":1.23}],"exact_gtin_only":true,"price_spread":2.99,"servings_basis":30,"limitation":"Prices are point-in-time observations."},"ownership":{"status":"not_found","owner":null,"candidate_count":0,"brand_age_months":150.6,"manufacturer_link":"not_established","limitation":"Trademark ownership does not establish manufacturer or country of manufacture."},"open_questions":[{"finding_id":"lookcloser-record-check-brand-ownership-record-not-retained","question":"Which exact USPTO registrant is tied to this product's brand use?","source_headline":"Brand ownership record not retained","needed_evidence":"exact-wordmark ownership record","priority":14,"absence_is_not_a_strike":true}],"connected_signals":[],"evidence_balance":{"documented_concerns":0,"confirmed_checks":3,"neutral_or_open_findings":9,"material_open_questions":1,"concern_finding_ids":[],"confirmation_finding_ids":["brand-storefront-same-barcode-on-the-brand-s-own-store","barcode-gtin-record-upc-independently-corroborated","nih-published-research-each-ingredient-s-amount-is-disclosed"]},"claim_scorecard":{"version":"2026-07-23.9","fairness_note":"Couldn’t verify means public proof was not found; it is not a mark against the product. Ingredient research is not treated as a trial of this exact product.","bucket_order":["contradicted","overreaching","checks_out","partly","claimed_no_support","unverified"],"buckets":{"contradicted":[],"overreaching":[],"checks_out":[],"partly":[{"bucket":"partly","claim_key":"claim:efficacy","claim":"“also supports brain health and may improve sleep”","check":"Ingredient evidence exists; on dose: label states 200 mg/serving — about 48% of the adult daily reference (adult RDA 310–420 mg elemental; NIH sets 350 mg/day as the supplemental upper level for elemental magnesium). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate labels (glycinate, citrate) often state compound mass, which reads ~5–7× higher than elemental magnesium — the Supplement Facts panel settles which is meant.","looked":"whether the ingredient doses on the label match the doses used in published research","found":"Ingredient evidence exists; on dose: label states 200 mg/serving — about 48% of the adult daily reference (adult RDA 310–420 mg elemental; NIH sets 350 mg/day as the supplemental upper level for elemental magnesium). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate labels (glycinate, citrate) often state compound mass, which reads ~5–7× higher than elemental magnesium — the Supplement Facts panel settles which is meant.","finding_id":null,"registry_receipts":[{"source":"nih_ods_magnesium","url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","label":"NIH ODS — Magnesium fact sheet","registry_name":"NIH ODS","standard":null,"identifier":"magnesium"}],"evidence_id":"ev-4cf1f9687805","evidence_url":"https://lookcloser.ai/e/ev-4cf1f9687805","content_fingerprint":"sha256:16dc83ae4554fe31e995e79740365d6c85425145f93c4022361b270b1b3fbc1f","observed_at":"2026-08-10","source_refs":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient"}],"proof":{"kind":"efficacy","status":"partly","snippet":"…Magnesium also supports brain health and may improve sleep quality…"}}],"claimed_no_support":[{"bucket":"claimed_no_support","claim_key":"claim:clinical","claim":"“features Magtein Magnesium L-Threonate which is highly absorbed for optimal benefits and the best clinically tested magnesium”","check":"We found no named, citable study of this product or formula. The claim may rest on ingredient research rather than a trial of this product.","looked":"a named, citable clinical study of this product or formula","found":"We found no named, citable study of this product or formula. The claim may rest on ingredient research rather than a trial of this product.","finding_id":null,"registry_receipts":[],"evidence_id":"ev-1c512b8a0714","evidence_url":"https://lookcloser.ai/e/ev-1c512b8a0714","content_fingerprint":"sha256:d63ed65909080821b7f878f8a1a9b452b36a8742fd478cee65e3e06df2a84f86","observed_at":"2026-08-10","source_refs":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-08-10","identity_basis":"named_ingredient","scope":"ingredient"}],"proof":{"kind":"clinical","status":"not-substantiated","snippet":"…It features Magtein Magnesium L-Threonate which is highly absorbed for optimal benefits and the best clinically tested magnesium supplement.…"}}],"unverified":[]},"counts":{"contradicted":0,"overreaching":0,"checks_out":0,"partly":1,"claimed_no_support":1,"unverified":0},"puffery":["ADVANCED 3-IN-1 COMPLEX","MAGTECH® Magnesium (90 ct) is the best-selling Cognitive Health Supplement in the Natural Channel"],"consumed_finding_ids":[]},"brand_presence":{"status":"exact_product","host":"https://naturalstacks.com","exact_product_page":"https://naturalstacks.com/products/magtech","consumer_meaning":"Brand presence is reported separately from exact-product identity.","absence_is_not_a_strike":true}},"observations":{"offers":[{"seller":"Amazon","price":33.96,"currency":"USD","url":"https://www.amazon.com/dp/B00HZWHGJ4","observed_at":"2026-08-10T22:13:14.164061+00:00","identity_basis":"exact_gtin","gtin":"00700598638004","rating":null,"price_source":"Keepa","price_type":"lowest_new"},{"seller":"Brand website","price":36.95,"currency":"USD","url":"https://naturalstacks.com/products/magtech","observed_at":"2026-08-10","identity_basis":"exact_gtin","gtin":"00700598638004","rating":{"value":null,"count":689}}],"ratings":{"stars":null,"count":null,"observed_at":"2026-08-10","source_ref":"source_listing"},"facts_panel_source":"listing_image"},"report_url":"https://lookcloser.ai/p/700598638004","methodology":"https://lookcloser.ai/methodology","built_at":"2026-08-10T23:35:03Z","status":"complete","caveats":["Pre-launch beta; not yet independently archived.","Listing-image panel data was machine-read; transcription errors are possible.","Prices and ratings are point-in-time snapshots.","LookCloser does not advise for or against any supplement."],"content_fingerprint":"sha256:0eca3ba0d2e0443808398c910f21d8536b310d73a534ddcf4b26eb6b2cb40b2c"}