{"schema":"lookcloser/record@0.2","compatible_with":["lookcloser/record@0.1"],"record_id":"023249091516","processing":{"collection_process_version":"2026-07-24.5","last_collected_at":"2026-08-04T16:22:35-0700","last_collection_event":"intake","label_reader_version":"2026-07-27.1","report_schema":"lookcloser/record@0.2","rendered_at":"2026-08-04T18:56:34-0700"},"analysis_status":"complete","processing_gaps":[],"gtin":"023249091516","listing_identifier":"B0B336FCWC","brand":"Sports Research","title":"Sports Research® Magnesium L-Threonate 2000mg w/Magtein®","listing_title":"Sports Research® Magnesium L-Threonate 2000mg w/Magtein®, 90 Count","identity":{"canonical_gtin":"00023249091516","source_listing_gtin":"00023249091516","listing_identifier":"B0B336FCWC","product_image":"https://m.media-amazon.com/images/I/61i20cLrvkL.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/B0B336FCWC","primary_url":"https://m.media-amazon.com/images/I/61i20cLrvkL.jpg","image_count":8,"last_attempted":"2026-08-04T16:22:35-0700","attempts":1},"observed_at":"2026-08-04","source_confirmations":["source_listing_gtin","external_barcode_record"],"brand_consistency":{"status":"match","compatible":true,"listing_brand":"Sports Research","package_brand":"SPORTS RESEARCH","match_method":"normalized_exact","similarity":1},"identity_rule":"exact identifiers only; related products are never substituted"},"trademark_owner":{"name":"Sports Research Corporation","entity":"CORPORATION","country":"CALIFORNIA, USA","address_filed":"784 W. Channel St., San Pedro, California 90731, UNITED STATES","address_public":"California 90731, UNITED STATES","serial_number":"87471673","registration_number":"5516811","wordmark":"SPORTS RESEARCH","status_description":"SECTION 8 & 15-ACCEPTED AND ACKNOWLEDGED","filed_date":"2017-06-01T00:00:00","first_use_commerce_date":"2000-08-01","registration_date":"2018-07-17","assignment_recorded":false,"goods_services":["IC 005: nutritional supplements, mineral supplements, vitamin supplements, food supplements, dietary supplements, herbal supplements; almond oil for medical purposes, namely, the treatment of dry skin; jojoba oil for medical purposes, namely, moisturizing skin; avocado oil for medical purposes, namely, treatment of dry skin and hair; vegetable glycerin for medical purposes, namely, treatment of dry skin [ ; castor oil for medical purposes, namely, treatment of dry skin and hair ].","IC 028: waist trimmer exercise belts; exercise belts providing thermal compression for use as sports articles and for athletic purposes; thigh trimmer exercise belts, arm trimmer exercise belts, abdominal wheels as exercise equipment, manually operated exercise equipment, resistance bands for use as sports articles, exercise bands, loop bands in the nature of exercise bands, speed jump ropes, performance jump ropes, medicine balls, inflatable balls for stability exercises in the nature of exercise balls.","IC 035: online retail store services featuring health and fitness products; mail order catalog services featuring health and fitness products; retail services by direct solicitation by sales agents in the field of health and fitness; product demonstration."],"source":"USPTO Trademark Search","source_url":"https://tsdr.uspto.gov/#caseNumber=87471673&caseSearchType=US_APPLICATION&caseType=DEFAULT&searchType=statusSearch","identity_basis":"exact_wordmark_and_supplement_goods"},"trademark_owner_candidates":[],"trademark_owner_status":"found","product_manufacturer_link":"not_established","label_responsible_parties":[],"identity_nodes":[{"role":"trademark_owner","name":"Sports Research Corporation","country":"CALIFORNIA, USA","address":"784 W. Channel St., San Pedro, California 90731, UNITED STATES","source_ref":"uspto_search","identity_basis":"exact_wordmark_supplement_class"}],"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","barcode-gtin-record-upc-independently-corroborated","nih-published-research-research-context-is-available-for-the-listed-ingr","nih-published-research-reaching-a-studied-dose-costs-about-30-month","uspto-trademark-registry-exact-trademark-owner-identified"],"point_finding_ids":["label-and-serving-arithmetic-listing-claim-matches-the-supplement-facts-","nih-published-research-each-ingredient-s-amount-is-disclosed","barcode-gtin-record-upc-independently-corroborated"],"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 2 g; the photo-read Supplement Facts panel shows Magnesium (from 2000 mg magnesium L-threonate) (Magtein®) at 2 g 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-625845b38348","evidence_url":"https://lookcloser.ai/e/ev-625845b38348","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 · 1 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-fb84104542fa","evidence_url":"https://lookcloser.ai/e/ev-fb84104542fa","presentation_home":"finding_catalog"},{"finding_id":"barcode-gtin-record-upc-independently-corroborated","card_type":"upc_corroborated","question":"owner","tone":"ok","weight":48,"headline":"The barcode identity checks out · 023249091516.","evidence":"UPCitemdb resolves 023249091516 to \"Sports Research Sports Research Magnesium L-Threonate - 90 Count\" (Sports Research) — consistent with this listing.","so_what":"The barcode matches, so we are checking the right product rather than a look-alike.","source":"Barcode / GTIN record","source_links":[],"registry_receipts":[],"evidence_id":"ev-c7b3a50b37b2","evidence_url":"https://lookcloser.ai/e/ev-c7b3a50b37b2","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-d9ea9c0d8ab7","evidence_url":"https://lookcloser.ai/e/ev-d9ea9c0d8ab7","presentation_home":"research_section"},{"finding_id":"nih-published-research-reaching-a-studied-dose-costs-about-30-month","card_type":"cost_to_reach_dose","question":"value","tone":"neutral","weight":42,"headline":"Reaching a studied dose costs about $30/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 $30 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-eab1c9325e4f","evidence_url":"https://lookcloser.ai/e/ev-eab1c9325e4f","presentation_home":"finding_catalog"},{"finding_id":"uspto-trademark-registry-exact-trademark-owner-identified","card_type":"owner_identified","question":"owner","tone":"neutral","weight":38,"headline":"🇺🇸 Brand owner: Sports Research Corporation · corporation, CALIFORNIA, USA","evidence":"USPTO lists Sports Research Corporation (CORPORATION) in CALIFORNIA, USA for the exact brand wordmark. This identifies the USPTO mark owner or applicant; it does not by itself prove who manufactures or sells this product.","so_what":"This tells you who is behind the brand and where the trademark record points. It does not by itself identify the manufacturer.","source":"USPTO trademark registry","source_links":[],"registry_receipts":[{"source":"uspto_search","url":"https://tsdr.uspto.gov/#caseNumber=87471673&caseSearchType=US_APPLICATION&caseType=DEFAULT&searchType=statusSearch","label":"USPTO · Registration 5516811","registry_name":"USPTO","standard":null,"identifier":"Registration 5516811"}],"evidence_id":"ev-be0887abe1d5","evidence_url":"https://lookcloser.ai/e/ev-be0887abe1d5","presentation_home":"ownership_section"}],"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."]},"tldr":{"assessment":"checks_confirmed","headline":"Listing claim matches the Supplement Facts panel","summary":"The listing claims 2 g; the photo-read Supplement Facts panel shows Magnesium (from 2000 mg magnesium L-threonate) (Magtein®) at 2 g 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":"uspto-trademark-registry-exact-trademark-owner-identified","class":"ok","headline":"Exact trademark owner identified","source":"USPTO trademark registry","scope":"brand_owner"},{"id":"barcode-gtin-record-upc-independently-corroborated","class":"ok","headline":"UPC independently corroborated","source":"Barcode / GTIN record","scope":"exact_product"}],"documented_concern_count":1,"confirmed_check_count":3,"open_question_count":0,"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 2 g; the photo-read Supplement Facts panel shows Magnesium (from 2000 mg magnesium L-threonate) (Magtein®) at 2 g 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":"claim_vs_panel_salt_weight_magnesium","source":"listing+facts_panel","class":"warn","weight":78,"headline":"The label’s 2,000 mg reads 14× larger than the magnesium on the panel","detail":"Salt weight, not the actual mineral. 2,000 mg is the weight of the magnesium threonate compound. The actual magnesium in it is 144 mg. You are getting 144 mg of magnesium per serving.","proof":{"claim_mg":2000,"panel_mg":144,"panel_row":"Magnesium (from 2000 mg magnesium L-threonate) (Magtein®)","ratio":13.89,"pattern":"salt_weight","subject":"magnesium"},"identity_basis":"listing","status":"live","severity":"warn","source_refs":["source_listing"],"source_url":"https://www.amazon.com/dp/B0B336FCWC","scope":"exact_listing","inference_level":"direct_observation","observed_at":"2026-08-04","presentation_tone":"warn","evidence_id":"ev-938a54b8c188","evidence_url":"https://lookcloser.ai/e/ev-938a54b8c188","content_fingerprint":"sha256:164629e84526206d240cf3556a8e5de3d56da0cdc81b89cfbc14ede8e3c50827","registry_receipts":[],"evidence":{"summary":{"claim_mg":2000,"panel_mg":144,"panel_row":"Magnesium (from 2000 mg magnesium L-threonate) (Magtein®)","ratio":13.89,"pattern":"salt_weight","subject":"magnesium"},"source_refs":["source_listing"],"source_records":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","looked":"LookCloser checked listing+facts_panel.","found":"Salt weight, not the actual mineral. 2,000 mg is the weight of the magnesium threonate compound. The actual magnesium in it is 144 mg. You are getting 144 mg of magnesium per serving."},"html_anchor":"finding-claim_vs_panel_salt_weight_magnesium","report_url":"https://lookcloser.ai/p/023249091516/full#finding-claim_vs_panel_salt_weight_magnesium"},{"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":"2026-08-04","presentation_tone":"ok","evidence_id":"ev-fb84104542fa","evidence_url":"https://lookcloser.ai/e/ev-fb84104542fa","content_fingerprint":"sha256:5e573084a78fc79fd1296fe96e7ffd990a87d6c09c5f12830a4d2314661d1ea6","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":"2026-08-04","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":"2026-08-04","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-04","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/023249091516/full#finding-nih-published-research-each-ingredient-s-amount-is-disclosed"},{"id":"uspto-trademark-registry-exact-trademark-owner-identified","source":"USPTO trademark registry","class":"ok","noted":false,"severity":"ok","weight":38,"headline":"Exact trademark owner identified","detail":"USPTO lists Sports Research Corporation (CORPORATION) in CALIFORNIA, USA for the exact brand wordmark. This identifies the USPTO mark owner or applicant; it does not by itself prove who manufactures or sells this product.","proof":"USPTO lists Sports Research Corporation (CORPORATION) in CALIFORNIA, USA for the exact brand wordmark. This identifies the USPTO mark owner or applicant; it does not by itself prove who manufactures or sells this product.","identity_basis":"owner_exact","status":"live","source_refs":["uspto_search"],"source_url":"https://tsdr.uspto.gov/#caseNumber=87471673&caseSearchType=US_APPLICATION&caseType=DEFAULT&searchType=statusSearch","scope":"brand_owner","inference_level":"direct_observation","observed_at":"2026-08-04","presentation_tone":"ok","evidence_id":"ev-be0887abe1d5","evidence_url":"https://lookcloser.ai/e/ev-be0887abe1d5","content_fingerprint":"sha256:5248ff446979323634345b74ff035879219ec37fdc36c95d2e315747deeb7dee","registry_receipts":[{"source":"uspto_search","url":"https://tsdr.uspto.gov/#caseNumber=87471673&caseSearchType=US_APPLICATION&caseType=DEFAULT&searchType=statusSearch","label":"USPTO · Registration 5516811","registry_name":"USPTO","standard":null,"identifier":"Registration 5516811"}],"evidence":{"summary":"USPTO lists Sports Research Corporation (CORPORATION) in CALIFORNIA, USA for the exact brand wordmark. This identifies the USPTO mark owner or applicant; it does not by itself prove who manufactures or sells this product.","source_refs":["uspto_search"],"source_records":[{"source":"uspto_search","source_url":"https://tsdr.uspto.gov/#caseNumber=87471673&caseSearchType=US_APPLICATION&caseType=DEFAULT&searchType=statusSearch","observed_at":"2026-08-04","identity_basis":"exact_wordmark_and_supplement_goods","scope":"brand","registry_name":"USPTO","identifier":"Registration 5516811","receipt_label":"USPTO · Registration 5516811"}],"observed_at":"2026-08-04","looked":"LookCloser checked USPTO trademark registry.","found":"USPTO lists Sports Research Corporation (CORPORATION) in CALIFORNIA, USA for the exact brand wordmark. This identifies the USPTO mark owner or applicant; it does not by itself prove who manufactures or sells this product."},"html_anchor":"finding-uspto-trademark-registry-exact-trademark-owner-identified","report_url":"https://lookcloser.ai/p/023249091516/full#finding-uspto-trademark-registry-exact-trademark-owner-identified"},{"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 023249091516 to \"Sports Research Sports Research Magnesium L-Threonate - 90 Count\" (Sports Research) — consistent with this listing.","proof":"UPCitemdb resolves 023249091516 to \"Sports Research Sports Research Magnesium L-Threonate - 90 Count\" (Sports Research) — consistent with this listing.","identity_basis":"gtin","status":"live","source_refs":["barcode_search","source_listing"],"source_url":"https://world.openfoodfacts.org/product/00023249091516","scope":"exact_product","inference_level":"direct_observation","observed_at":"2026-08-04","presentation_tone":"ok","evidence_id":"ev-c7b3a50b37b2","evidence_url":"https://lookcloser.ai/e/ev-c7b3a50b37b2","content_fingerprint":"sha256:e4c1492a72531d52fe71c0c472d9ea02e5bb179132b0264563d0ddcdf969ea57","registry_receipts":[],"evidence":{"summary":"UPCitemdb resolves 023249091516 to \"Sports Research Sports Research Magnesium L-Threonate - 90 Count\" (Sports Research) — consistent with this listing.","source_refs":["barcode_search","source_listing"],"source_records":[{"source":"barcode_search","source_url":"https://world.openfoodfacts.org/product/00023249091516","observed_at":"2026-08-04","identity_basis":"gtin","scope":"exact_gtin"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","looked":"LookCloser checked Barcode / GTIN record.","found":"UPCitemdb resolves 023249091516 to \"Sports Research Sports Research Magnesium L-Threonate - 90 Count\" (Sports Research) — consistent with this listing."},"html_anchor":"finding-barcode-gtin-record-upc-independently-corroborated","report_url":"https://lookcloser.ai/p/023249091516/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 2 g; the photo-read Supplement Facts panel shows Magnesium (from 2000 mg magnesium L-threonate) (Magtein®) at 2 g per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.","proof":"The listing claims 2 g; the photo-read Supplement Facts panel shows Magnesium (from 2000 mg magnesium L-threonate) (Magtein®) at 2 g 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/B0B336FCWC","scope":"exact_listing","inference_level":"gap","observed_at":"2026-08-04","presentation_tone":"gap","evidence_id":"ev-625845b38348","evidence_url":"https://lookcloser.ai/e/ev-625845b38348","content_fingerprint":"sha256:aeb5337d97bed838c812b6baad44f5741e657807dab5b8bb54b00003ea9bda97","registry_receipts":[],"evidence":{"summary":"The listing claims 2 g; the photo-read Supplement Facts panel shows Magnesium (from 2000 mg magnesium L-threonate) (Magtein®) at 2 g 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/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","looked":"LookCloser checked Label and serving arithmetic.","found":"The listing claims 2 g; the photo-read Supplement Facts panel shows Magnesium (from 2000 mg magnesium L-threonate) (Magtein®) at 2 g 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/023249091516/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 2000 mg/serving — about 476% 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 2000 mg/serving — about 476% 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":"2026-08-04","presentation_tone":"gap","evidence_id":"ev-0384dff17048","evidence_url":"https://lookcloser.ai/e/ev-0384dff17048","content_fingerprint":"sha256:fe9f0af2faacc270cfa4b77e542e7ceca0d9af4af04c6a1a302577f7fad89e28","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 2000 mg/serving — about 476% 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":"2026-08-04","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":"2026-08-04","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-04","looked":"LookCloser checked NIH / published research.","found":"label states 2000 mg/serving — about 476% 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/023249091516/full#finding-nih-published-research-magnesium-amount-in-daily-intake-context"},{"id":"nih-published-research-reaching-a-studied-dose-costs-about-30-month","source":"NIH / published research","class":"gap","noted":false,"severity":"info","weight":22,"headline":"Reaching a studied dose costs about $30/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 $30 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 $30 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":"2026-08-04","presentation_tone":"gap","evidence_id":"ev-eab1c9325e4f","evidence_url":"https://lookcloser.ai/e/ev-eab1c9325e4f","content_fingerprint":"sha256:10254b5120c08992a8efe1167eceba5ff0c1cf360c4828918c43c0875fdfb07e","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 $30 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":"2026-08-04","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":"2026-08-04","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-04","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 $30 per month. A price observation, not a recommendation."},"html_anchor":"finding-nih-published-research-reaching-a-studied-dose-costs-about-30-month","report_url":"https://lookcloser.ai/p/023249091516/full#finding-nih-published-research-reaching-a-studied-dose-costs-about-30-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":"2026-08-04","presentation_tone":"gap","evidence_id":"ev-d9ea9c0d8ab7","evidence_url":"https://lookcloser.ai/e/ev-d9ea9c0d8ab7","content_fingerprint":"sha256:0a0e1f2146110315a5a61a327efb15d93d795228fa69fb9fdb7722ef62cb50c1","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":"2026-08-04","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":"2026-08-04","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-04","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/023249091516/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/B0B336FCWC","scope":"exact_listing","inference_level":"gap","observed_at":"2026-08-04","presentation_tone":"gap","evidence_id":"ev-00aa125357fc","evidence_url":"https://lookcloser.ai/e/ev-00aa125357fc","content_fingerprint":"sha256:275a86435b871067bf20b845327d0b9039065355bf7d3c5270ea4b80ff02f7ab","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/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","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/023249091516/full#finding-label-and-serving-arithmetic-public-label-filing-not-retained"},{"id":"fda-public-records-recall-search-no-match-found-as-of-aug-04-2026","source":"FDA public records","class":"gap","noted":false,"severity":"info","weight":19,"headline":"Recall search: no match found (as of Aug 04, 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:%22Sports+Research%22+OR+product_description:%22Sports+Research%22)&limit=5","scope":"search_scope","inference_level":"gap","observed_at":"2026-08-04","presentation_tone":"caution","evidence_id":"ev-ba28d475a9a1","evidence_url":"https://lookcloser.ai/e/ev-ba28d475a9a1","content_fingerprint":"sha256:6c49819f944273277f64afab2643551602e5e60aba125fe6b121f659602d877b","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:%22Sports+Research%22+OR+product_description:%22Sports+Research%22)&limit=5","observed_at":"2026-08-04","identity_basis":"search_only","scope":"product_or_brand","registry_name":"FDA enforcement","identifier":"Sports Research","receipt_label":"FDA enforcement search · Sports Research"}],"observed_at":"2026-08-04","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-04-2026","report_url":"https://lookcloser.ai/p/023249091516/full#finding-fda-public-records-recall-search-no-match-found-as-of-aug-04-2026"},{"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-B0B336FCWC","scope":"exact_listing","inference_level":"gap","observed_at":"2026-08-04","presentation_tone":"gap","evidence_id":"ev-86679ca5091c","evidence_url":"https://lookcloser.ai/e/ev-86679ca5091c","content_fingerprint":"sha256:597b46e0dd2c0eaa6f62de0c92682b11f98d59ad20e5d67c96e1e9302e164001","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-B0B336FCWC","observed_at":"2026-08-04","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","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/023249091516/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 186 on 2025-07-01 to 400 on 2026-07-21 (net +214). 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 186 on 2025-07-01 to 400 on 2026-07-21 (net +214). 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-B0B336FCWC","scope":"exact_listing","inference_level":"gap","observed_at":"2026-08-04","presentation_tone":"gap","evidence_id":"ev-b94d1e47905d","evidence_url":"https://lookcloser.ai/e/ev-b94d1e47905d","content_fingerprint":"sha256:36d93376da48406854b772ae6989f6ecb3875c8f6db5db2034c291a65827b428","registry_receipts":[],"evidence":{"summary":"Exact-listing history records written-review counts from 186 on 2025-07-01 to 400 on 2026-07-21 (net +214). 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-B0B336FCWC","observed_at":"2026-08-04","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","looked":"LookCloser checked Keepa exact-listing history.","found":"Exact-listing history records written-review counts from 186 on 2025-07-01 to 400 on 2026-07-21 (net +214). 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/023249091516/full#finding-keepa-exact-listing-history-180-day-review-count-history-is-on-file"}],"evidence_records":[{"evidence_id":"ev-938a54b8c188","record_id":"023249091516","gtin":"023249091516","claim_key":"finding:claim_vs_panel_salt_weight_magnesium","primary_source":"source_listing","claim":"The label’s 2,000 mg reads 14× larger than the magnesium on the panel","bucket":"claimed_no_support","looked":"LookCloser checked listing+facts_panel.","found":"Salt weight, not the actual mineral. 2,000 mg is the weight of the magnesium threonate compound. The actual magnesium in it is 144 mg. You are getting 144 mg of magnesium per serving.","proof":{"claim_mg":2000,"panel_mg":144,"panel_row":"Magnesium (from 2000 mg magnesium L-threonate) (Magtein®)","ratio":13.89,"pattern":"salt_weight","subject":"magnesium"},"source_refs":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:164629e84526206d240cf3556a8e5de3d56da0cdc81b89cfbc14ede8e3c50827","evidence_url":"https://lookcloser.ai/e/ev-938a54b8c188"},{"evidence_id":"ev-be0887abe1d5","record_id":"023249091516","gtin":"023249091516","claim_key":"finding:uspto-trademark-registry-exact-trademark-owner-identified","primary_source":"uspto_search","claim":"Exact trademark owner identified","bucket":"checks_out","looked":"LookCloser checked USPTO trademark registry.","found":"USPTO lists Sports Research Corporation (CORPORATION) in CALIFORNIA, USA for the exact brand wordmark. This identifies the USPTO mark owner or applicant; it does not by itself prove who manufactures or sells this product.","proof":{"detail":"USPTO lists Sports Research Corporation (CORPORATION) in CALIFORNIA, USA for the exact brand wordmark. This identifies the USPTO mark owner or applicant; it does not by itself prove who manufactures or sells this product."},"source_refs":[{"source":"uspto_search","source_url":"https://tsdr.uspto.gov/#caseNumber=87471673&caseSearchType=US_APPLICATION&caseType=DEFAULT&searchType=statusSearch","observed_at":"2026-08-04","identity_basis":"exact_wordmark_and_supplement_goods","scope":"brand","registry_name":"USPTO","identifier":"Registration 5516811","receipt_label":"USPTO · Registration 5516811"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:5248ff446979323634345b74ff035879219ec37fdc36c95d2e315747deeb7dee","evidence_url":"https://lookcloser.ai/e/ev-be0887abe1d5"},{"evidence_id":"ev-c7b3a50b37b2","record_id":"023249091516","gtin":"023249091516","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 023249091516 to \"Sports Research Sports Research Magnesium L-Threonate - 90 Count\" (Sports Research) — consistent with this listing.","proof":{"detail":"UPCitemdb resolves 023249091516 to \"Sports Research Sports Research Magnesium L-Threonate - 90 Count\" (Sports Research) — consistent with this listing."},"source_refs":[{"source":"barcode_search","source_url":"https://world.openfoodfacts.org/product/00023249091516","observed_at":"2026-08-04","identity_basis":"gtin","scope":"exact_gtin"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:e4c1492a72531d52fe71c0c472d9ea02e5bb179132b0264563d0ddcdf969ea57","evidence_url":"https://lookcloser.ai/e/ev-c7b3a50b37b2"},{"evidence_id":"ev-fb84104542fa","record_id":"023249091516","gtin":"023249091516","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":"2026-08-04","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":"2026-08-04","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:5e573084a78fc79fd1296fe96e7ffd990a87d6c09c5f12830a4d2314661d1ea6","evidence_url":"https://lookcloser.ai/e/ev-fb84104542fa"},{"evidence_id":"ev-ba28d475a9a1","record_id":"023249091516","gtin":"023249091516","claim_key":"finding:fda-public-records-recall-search-no-match-found-as-of-aug-04-2026","primary_source":"openfda_search","claim":"Recall search: no match found (as of Aug 04, 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:%22Sports+Research%22+OR+product_description:%22Sports+Research%22)&limit=5","observed_at":"2026-08-04","identity_basis":"search_only","scope":"product_or_brand","registry_name":"FDA enforcement","identifier":"Sports Research","receipt_label":"FDA enforcement search · Sports Research"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:6c49819f944273277f64afab2643551602e5e60aba125fe6b121f659602d877b","evidence_url":"https://lookcloser.ai/e/ev-ba28d475a9a1"},{"evidence_id":"ev-625845b38348","record_id":"023249091516","gtin":"023249091516","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 2 g; the photo-read Supplement Facts panel shows Magnesium (from 2000 mg magnesium L-threonate) (Magtein®) at 2 g per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.","proof":{"detail":"The listing claims 2 g; the photo-read Supplement Facts panel shows Magnesium (from 2000 mg magnesium L-threonate) (Magtein®) at 2 g 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/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:aeb5337d97bed838c812b6baad44f5741e657807dab5b8bb54b00003ea9bda97","evidence_url":"https://lookcloser.ai/e/ev-625845b38348"},{"evidence_id":"ev-00aa125357fc","record_id":"023249091516","gtin":"023249091516","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/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:275a86435b871067bf20b845327d0b9039065355bf7d3c5270ea4b80ff02f7ab","evidence_url":"https://lookcloser.ai/e/ev-00aa125357fc"},{"evidence_id":"ev-b94d1e47905d","record_id":"023249091516","gtin":"023249091516","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 186 on 2025-07-01 to 400 on 2026-07-21 (net +214). 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 186 on 2025-07-01 to 400 on 2026-07-21 (net +214). 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-B0B336FCWC","observed_at":"2026-08-04","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:36d93376da48406854b772ae6989f6ecb3875c8f6db5db2034c291a65827b428","evidence_url":"https://lookcloser.ai/e/ev-b94d1e47905d"},{"evidence_id":"ev-86679ca5091c","record_id":"023249091516","gtin":"023249091516","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-B0B336FCWC","observed_at":"2026-08-04","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:597b46e0dd2c0eaa6f62de0c92682b11f98d59ad20e5d67c96e1e9302e164001","evidence_url":"https://lookcloser.ai/e/ev-86679ca5091c"},{"evidence_id":"ev-0384dff17048","record_id":"023249091516","gtin":"023249091516","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 2000 mg/serving — about 476% of the adult daily reference (adult RDA 310–420 mg elemental; NIH sets 350 mg/day as the supplemental upper level for elemental magnesium). 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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":"2026-08-04","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":"2026-08-04","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:0a0e1f2146110315a5a61a327efb15d93d795228fa69fb9fdb7722ef62cb50c1","evidence_url":"https://lookcloser.ai/e/ev-d9ea9c0d8ab7"},{"evidence_id":"ev-eab1c9325e4f","record_id":"023249091516","gtin":"023249091516","claim_key":"finding:nih-published-research-reaching-a-studied-dose-costs-about-30-month","primary_source":"nih_ods_magnesium","claim":"Reaching a studied dose costs about $30/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 $30 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 $30 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":"2026-08-04","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":"2026-08-04","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:10254b5120c08992a8efe1167eceba5ff0c1cf360c4828918c43c0875fdfb07e","evidence_url":"https://lookcloser.ai/e/ev-eab1c9325e4f"},{"evidence_id":"ev-a45ab1ff3305","record_id":"023249091516","gtin":"023249091516","claim_key":"claim:origin","primary_source":"source_listing","claim":"“IN THE USA: Our products are made in cGMP compliant facilities in the United States, using only the best ingredients from domestic & international”","bucket":"unverified","looked":"customs records or label filings showing where ingredients were sourced and where it was made","found":"“Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product.","proof":{"kind":"origin","status":"unverified","snippet":"…MANUFACTURED IN THE USA: Our products are made in cGMP compliant facilities in the United States, using only the best ingredients from domestic & international origins.…"},"source_refs":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:313a1399bc9123d270438a25d16c91c31ede016db4f5d4af65a39a295c76462a","evidence_url":"https://lookcloser.ai/e/ev-a45ab1ff3305"},{"evidence_id":"ev-6f33dd390f21","record_id":"023249091516","gtin":"023249091516","claim_key":"claim:efficacy","primary_source":"source_listing","claim":"“absorbed, our magnesium L threonate capsules are used for their overall brain health benefits and may help support memory, focus, relaxation,…”","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 2000 mg/serving — about 476% 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. 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Because this panel was read from an image, confirm the physical label before treating the difference as settled.","proof":{"subject":"magnesium","listing_amount_mg":2000,"panel_amount_mg":144,"panel_source":"listing_image","tolerance_mg":40},"source_refs":[{"source":"facts_panel","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0B336FCWC","observed_at":"2026-08-04","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-08-04","content_fingerprint":"sha256:8c8c4d24105dcf7bdf5113a83c5951e0405ce5eca5c443c4ecce3be297d86834","evidence_url":"https://lookcloser.ai/e/ev-d773e2b1c4fb"}],"label_math":{"verdict":"UNKNOWN","claimed_subject":"magnesium","claimed_mg":2000,"serving_mass_mg":null,"percent_of_serving":null,"serving_mass_source":null,"ambiguity":null,"declared_actives_total_mg":144,"headline_claim_mg":2000,"headline_subject":"magnesium","subject_actual_mg":144},"listing_claims":{"dose_claims":[{"subject":"magnesium","amount_mg":2000,"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 Formula","2000MG MAGNESIUM L-THREONATE","SUPPORTS COGNITIVE HEALTH*","Dietary Supplement","2000 mg of Magnesium L-Threonate Per Serving","Supports Cognitive Function*","Formulated with Magtein®","Non-GMO, Vegan & Gluten-Free","Take 3 veggie capsules daily.","Living well starts with supplementing well."],"certification_text":["VEGAN","GLUTEN-FREE","NON-GMO","Non-GMO","Vegan","Gluten-Free","Non-GMO Project Verified","Non-GMO Verified"],"claim_checks":[{"kind":"origin","label":"Origin claim","snippet":"…MANUFACTURED IN THE USA: Our products are made in cGMP compliant facilities in the United States, using only the best ingredients from domestic & international origins.…","looked":"customs records or label filings showing where ingredients were sourced and where it was made","found":"“Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product.","status":"unverified"},{"kind":"efficacy","label":"Benefit claim","snippet":"…Easily absorbed, our magnesium L threonate capsules are used for their overall brain health benefits and may help support memory, focus, relaxation, mood, and cognition.","looked":"whether the ingredient doses on the label match the doses used in published research","found":"Ingredient evidence exists; on dose: label states 2000 mg/serving — about 476% 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. 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\"GLUTEN-FREE\", \"NON-GMO\"]}\n"},{"img":1,"model":"claude-cli:subscription","text":"```json\n{\"brand\": null, \"product_name\": \"Magnesium L-Threonate\", \"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\": [\"2000 mg of Magnesium L-Threonate Per Serving\", \"Supports Cognitive Function*\", \"Formulated with Magtein\\u00ae\", \"Non-GMO, Vegan & Gluten-Free\"], \"certifications\": [\"Non-GMO\", \"Vegan\", \"Gluten-Free\"]}\n```\n"},{"img":2,"model":"claude-cli:subscription","text":"{\"brand\": null, \"product_name\": null, \"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\": [\"Take 3 veggie capsules daily.\"], \"certifications\": []}\n"},{"img":3,"model":"claude-cli:subscription","text":"```json\n{\"brand\": null, \"product_name\": null, \"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\": [\"nongmoproject.org\"], \"actives\": [], \"label_claims\": [\"Living well starts with supplementing well.\", \"Just one serving provides 2000 mg of Magtein® Magnesium L-threonate.\", \"QUALITY MATTERS:\"], \"certifications\": [\"Non-GMO Project Verified\", \"Non-GMO Verified\", \"Gluten-Free\", \"Third Party Tested\", \"cGMP Compliant\"]}\n```\n"},{"img":4,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"SPORTS RESEARCH\", \"product_name\": null, \"barcode\": null, \"panel\": true, \"serving_size_text\": \"3 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\"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\": [\"The Sport of Life.\", \"Play it Well.\"], \"certifications\": []}\n"},{"img":7,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"Sports Research\", \"product_name\": \"MAGNESIUM L-THREONATE\", \"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\": \"180 Veggie Capsules\", \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"2000MG Magnesium L-Threonate\", \"SUPPORTS COGNITIVE HEALTH*\", \"Advanced Formula*\", \"Discover our new look.\", \"A BETTER REFLECTION OF WHAT'S INSIDE.\", \"PACKAGING MAY VARY\"], \"certifications\": [\"Gluten-Free\", 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\"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": null, \"net_weight_g\": null, \"unit_count_text\": \"90 Veggie Capsules\", \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"Advanced Formula\", \"2000MG MAGNESIUM L-THREONATE\", \"SUPPORTS COGNITIVE HEALTH*\", \"Dietary Supplement\"], \"certifications\": [\"VEGAN\", \"GLUTEN-FREE\", \"NON-GMO\"]}\n"},{"img":1,"model":"claude-cli:subscription","text":"```json\n{\"brand\": null, \"product_name\": \"Magnesium L-Threonate\", \"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\": [\"2000 mg of Magnesium L-Threonate Per Serving\", \"Supports Cognitive Function*\", \"Formulated with Magtein\\u00ae\", \"Non-GMO, Vegan & Gluten-Free\"], 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