{"schema":"lookcloser/record@0.2","compatible_with":["lookcloser/record@0.1"],"record_id":"850038130176","processing":{"collection_process_version":"2026-07-24.5","last_collected_at":"2026-07-31T13:35:02-0700","last_collection_event":"intake","label_reader_version":"2026-07-27.1","report_schema":"lookcloser/record@0.2","rendered_at":"2026-08-02T15:20:33-0700"},"analysis_status":"complete","processing_gaps":[],"gtin":"850038130176","listing_identifier":"B0BMQR925S","brand":"NATURAL STACKS","title":"Natural Stacks Sleep Magnesium Gummies","listing_title":"Sleep Magnesium Gummies w/Melatonin & Chamomile - 30 Mixed Berry Chewables","identity":{"canonical_gtin":"00850038130176","source_listing_gtin":"00850038130176","listing_identifier":"B0BMQR925S","product_image":"https://m.media-amazon.com/images/I/71+NlUTNE4L.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/B0BMQR925S","primary_url":"https://m.media-amazon.com/images/I/71+NlUTNE4L.jpg","image_count":6,"last_attempted":"2026-07-31T13:35:02-0700","attempts":1},"observed_at":"2026-07-31","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":[],"identity_nodes":[],"seller_of_record":null,"seller_of_record_status":"not_collected_founder_gated","consumer_view":{"template":"claim_panel","kicker":"The useful read","headline":"The label says 11.2 g of magnesium in 4 gummies — but not what those 4 gummies weigh","deck":"That weight is the one number that would let anyone check the amount on the front. We did not weigh it ourselves, so this is an open question, not a problem we found.","display_mode":"single_home_per_finding","finding_ids":["serving_mass_impossibility","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-29-month"],"point_finding_ids":["serving_mass_impossibility","label-and-serving-arithmetic-listing-claim-matches-the-supplement-facts-","nih-published-research-each-ingredient-s-amount-is-disclosed"],"cards":[{"finding_id":"serving_mass_impossibility","card_type":"serving_mass_impossibility","question":"label","tone":"warn","weight":92,"headline":"The label says 11.2 g of magnesium in 4 gummies — but not what those 4 gummies weigh","evidence":"A serving is 4 gummies, and the panel declares 11,200 mg — 11.2 g — of magnesium in that serving. What the panel doesn’t give is the one number needed to check it: what a serving weighs. Gummies of this type usually run somewhere around 2.5 to 3.5 grams each, which would put 4…","so_what":"That weight is the one number that would let anyone check the amount on the front. We did not weigh it ourselves, so this is an open question, not a problem we found.","source":"Label and serving arithmetic","source_links":[],"registry_receipts":[],"evidence_id":"ev-efeaeef5c45b","evidence_url":"https://lookcloser.ai/e/ev-efeaeef5c45b","presentation_home":"finding_catalog"},{"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 (as Magnesium Citrate) 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-54c796ef6eb7","evidence_url":"https://lookcloser.ai/e/ev-54c796ef6eb7","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 · 7 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-a0082c268e5b","evidence_url":"https://lookcloser.ai/e/ev-a0082c268e5b","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 · 850038130176.","evidence":"The brand's store lists this exact barcode as “Sleep Magnesium Gummies” (variant: Default Title) — 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-02880d9334a9","evidence_url":"https://lookcloser.ai/e/ev-02880d9334a9","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, melatonin.","evidence":"Published sources describe how magnesium, melatonin 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…","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"},{"label":"NIH NCCIH — Melatonin","url":"https://www.nccih.nih.gov/health/melatonin-what-you-need-to-know","role":"melatonin context · not product evidence"},{"label":"PubMed search: melatonin dose sleep onset","url":"https://pubmed.ncbi.nlm.nih.gov/?term=melatonin+dose+sleep+onset+meta-analysis","role":"melatonin 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-8dc32b124bbd","evidence_url":"https://lookcloser.ai/e/ev-8dc32b124bbd","presentation_home":"research_section"},{"finding_id":"nih-published-research-reaching-a-studied-dose-costs-about-29-month","card_type":"cost_to_reach_dose","question":"value","tone":"neutral","weight":42,"headline":"Reaching a studied dose costs about $29/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 $29 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-6fffba11cba9","evidence_url":"https://lookcloser.ai/e/ev-6fffba11cba9","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},{"ingredient":"melatonin","label":"NIH NCCIH — Melatonin","url":"https://www.nccih.nih.gov/health/melatonin-what-you-need-to-know","scope":"ingredient_context","product_evidence":false},{"ingredient":"melatonin","label":"PubMed search: melatonin dose sleep onset","url":"https://pubmed.ncbi.nlm.nih.gov/?term=melatonin+dose+sleep+onset+meta-analysis","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":"caution","headline":"The label says 11.2 g of magnesium in 4 gummies — but not what those 4 gummies weigh","summary":"A serving is 4 gummies, and the panel declares 11,200 mg — 11.2 g — of magnesium in that serving. What the panel doesn’t give is the one number needed to check it: what a serving weighs. Gummies of this type usually run somewhere around 2.5 to 3.5 grams each, which would put 4 of them near 10 to 14 grams. If that holds here, magnesium would be a high share of the serving’s weight, and that is why we stopped on this number. But we did not weigh these gummies. The 2.5–3.5 gram figure is a general estimate for the format, not a measurement of this product. One published number would settle it: the weight of one gummy, or of a 4-gummy serving. Until then we can’t confirm the 11.2 g and we can’t dispute it. Nothing here says the product is short — only that the label doesn’t let anyone check. Checked August 2, 2026.","lead_finding_id":"serving_mass_impossibility","key_findings":[{"id":"serving_mass_impossibility","class":"warn","headline":"The label says 11.2 g of magnesium in 4 gummies — but not what those 4 gummies weigh","source":"Label and serving arithmetic","scope":"ingredient_context"},{"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"}],"documented_concern_count":1,"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":"caution","headline":"The label says 11.2 g of magnesium in 4 gummies — but not what those 4 gummies weigh","detail":"A serving is 4 gummies, and the panel declares 11,200 mg — 11.2 g — of magnesium in that serving. What the panel doesn’t give is the one number needed to check it: what a serving weighs. Gummies of this type usually run somewhere around 2.5 to 3.5 grams each, which would put 4 of them near 10 to 14 grams. If that holds here, magnesium would be a high share of the serving’s weight, and that is why we stopped on this number. But we did not weigh these gummies. The 2.5–3.5 gram figure is a general estimate for the format, not a measurement of this product. One published number would settle it: the weight of one gummy, or of a 4-gummy serving. Until then we can’t confirm the 11.2 g and we can’t dispute it. Nothing here says the product is short — only that the label doesn’t let anyone check. Checked August 2, 2026.","lead_finding_id":"serving_mass_impossibility","meaning":"Finding-first decision support. Confirmed checks are not endorsements; cautions identify documented facts or bounded comparisons, not medical advice."},"public_verifiability":{"state":"caution","headline":"Caution — a finding needs explanation","detail":"The label says 11.2 g of magnesium in 4 gummies — but not what those 4 gummies weigh.","meaning":"Evidence availability only. Missing public data is a gap, never a strike."},"consistency_score":7.5,"findings":[{"id":"serving_mass_impossibility","source":"Label and serving arithmetic","class":"warn","noted":false,"severity":"warn","weight":92,"headline":"The label says 11.2 g of magnesium in 4 gummies — but not what those 4 gummies weigh","detail":"A serving is 4 gummies, and the panel declares 11,200 mg — 11.2 g — of magnesium in that serving. What the panel doesn’t give is the one number needed to check it: what a serving weighs. Gummies of this type usually run somewhere around 2.5 to 3.5 grams each, which would put 4 of them near 10 to 14 grams. If that holds here, magnesium would be a high share of the serving’s weight, and that is why we stopped on this number. But we did not weigh these gummies. The 2.5–3.5 gram figure is a general estimate for the format, not a measurement of this product. One published number would settle it: the weight of one gummy, or of a 4-gummy serving. Until then we can’t confirm the 11.2 g and we can’t dispute it. Nothing here says the product is short — only that the label doesn’t let anyone check. Checked August 2, 2026.","proof":{"declared_contents_mg":11200,"active_total_mg":4200,"carbohydrate_mg":7000,"typical_gummy_mass_g":[2.5,3.5],"serving_count":4,"serving_weight_stated":false,"stated_serving_mass_mg":null},"identity_basis":"ingredient","status":"live","source_refs":["facts_panel","source_listing"],"source_url":"https://www.amazon.com/dp/B0BMQR925S","scope":"ingredient_context","inference_level":"derived","observed_at":"2026-07-31","presentation_tone":"warn","evidence_id":"ev-efeaeef5c45b","evidence_url":"https://lookcloser.ai/e/ev-efeaeef5c45b","content_fingerprint":"sha256:6688626ade625687a51486b82593f8d0449cfeb85111d72812dec82adbf3d96a","registry_receipts":[],"evidence":{"summary":{"declared_contents_mg":11200,"active_total_mg":4200,"carbohydrate_mg":7000,"typical_gummy_mass_g":[2.5,3.5],"serving_count":4,"serving_weight_stated":false,"stated_serving_mass_mg":null},"source_refs":["facts_panel","source_listing"],"source_records":[{"source":"facts_panel","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","looked":"LookCloser checked Label and serving arithmetic.","found":"A serving is 4 gummies, and the panel declares 11,200 mg — 11.2 g — of magnesium in that serving. What the panel doesn’t give is the one number needed to check it: what a serving weighs. Gummies of this type usually run somewhere around 2.5 to 3.5 grams each, which would put 4 of them near 10 to 14 grams. If that holds here, magnesium would be a high share of the serving’s weight, and that is why we stopped on this number. But we did not weigh these gummies. The 2.5–3.5 gram figure is a general estimate for the format, not a measurement of this product. One published number would settle it: the weight of one gummy, or of a 4-gummy serving. Until then we can’t confirm the 11.2 g and we can’t dispute it. Nothing here says the product is short — only that the label doesn’t let anyone check. Checked August 2, 2026."},"html_anchor":"finding-serving_mass_impossibility","report_url":"https://lookcloser.ai/p/850038130176/full#finding-serving_mass_impossibility"},{"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","pubmed_melatonin"],"source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","scope":"ingredient_context","inference_level":"direct_observation","observed_at":"2026-07-31","presentation_tone":"ok","evidence_id":"ev-a0082c268e5b","evidence_url":"https://lookcloser.ai/e/ev-a0082c268e5b","content_fingerprint":"sha256:0557b39b27c8b28b385d4016d932dce2dc347f85854ebd9d1260d3929de35dc6","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","pubmed_melatonin"],"source_records":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-07-31","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":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"},{"source":"pubmed_melatonin","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=melatonin+dose+sleep+onset+meta-analysis","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-31","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/850038130176/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 “Sleep Magnesium Gummies” (variant: Default Title) — identity confirmed across retailer listings.","proof":"The brand's store lists this exact barcode as “Sleep Magnesium Gummies” (variant: Default Title) — identity confirmed across retailer listings.","identity_basis":"listing","status":"live","source_refs":["brand_store","source_listing"],"source_url":"https://naturalstacks.com/products/sleep-magnesium-gummies-30ct","scope":"exact_listing","inference_level":"direct_observation","observed_at":"2026-07-31","presentation_tone":"ok","evidence_id":"ev-02880d9334a9","evidence_url":"https://lookcloser.ai/e/ev-02880d9334a9","content_fingerprint":"sha256:b9c8d484853a87b945dcdf72ba1a69b4898850d0906ae8997b96c0aac0249756","registry_receipts":[],"evidence":{"summary":"The brand's store lists this exact barcode as “Sleep Magnesium Gummies” (variant: Default Title) — identity confirmed across retailer listings.","source_refs":["brand_store","source_listing"],"source_records":[{"source":"brand_store","source_url":"https://naturalstacks.com/products/sleep-magnesium-gummies-30ct","observed_at":"2026-07-31","identity_basis":"exact_gtin","scope":"brand_or_exact_product"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","looked":"LookCloser checked Brand storefront.","found":"The brand's store lists this exact barcode as “Sleep Magnesium Gummies” (variant: Default Title) — identity confirmed across retailer listings."},"html_anchor":"finding-brand-storefront-same-barcode-on-the-brand-s-own-store","report_url":"https://lookcloser.ai/p/850038130176/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":"Open Food Facts resolves 850038130176 to \"Magnesium Gummies SLEEP\" (Natural Stacks) — consistent with this listing.","proof":"Open Food Facts resolves 850038130176 to \"Magnesium Gummies SLEEP\" (Natural Stacks) — consistent with this listing.","identity_basis":"gtin","status":"live","source_refs":["barcode_search","source_listing"],"source_url":"https://world.openfoodfacts.org/product/00850038130176","scope":"exact_product","inference_level":"direct_observation","observed_at":"2026-07-31","presentation_tone":"ok","evidence_id":"ev-8a60802b694d","evidence_url":"https://lookcloser.ai/e/ev-8a60802b694d","content_fingerprint":"sha256:f05bdb4f122c2e5426de70b47587bd768cde48d8342999551921e9bee2d739b4","registry_receipts":[],"evidence":{"summary":"Open Food Facts resolves 850038130176 to \"Magnesium Gummies SLEEP\" (Natural Stacks) — consistent with this listing.","source_refs":["barcode_search","source_listing"],"source_records":[{"source":"barcode_search","source_url":"https://world.openfoodfacts.org/product/00850038130176","observed_at":"2026-07-31","identity_basis":"gtin","scope":"exact_gtin"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","looked":"LookCloser checked Barcode / GTIN record.","found":"Open Food Facts resolves 850038130176 to \"Magnesium Gummies SLEEP\" (Natural Stacks) — consistent with this listing."},"html_anchor":"finding-barcode-gtin-record-upc-independently-corroborated","report_url":"https://lookcloser.ai/p/850038130176/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 (as Magnesium Citrate) 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 (as Magnesium Citrate) 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/B0BMQR925S","scope":"exact_listing","inference_level":"gap","observed_at":"2026-07-31","presentation_tone":"gap","evidence_id":"ev-54c796ef6eb7","evidence_url":"https://lookcloser.ai/e/ev-54c796ef6eb7","content_fingerprint":"sha256:e53633f8be36e88aaadfa1d943664fbe40c2fe0856524f53d3ebbc25b40666a8","registry_receipts":[],"evidence":{"summary":"The listing claims 200 mg; the photo-read Supplement Facts panel shows Magnesium (as Magnesium Citrate) 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/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","looked":"LookCloser checked Label and serving arithmetic.","found":"The listing claims 200 mg; the photo-read Supplement Facts panel shows Magnesium (as Magnesium Citrate) 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/850038130176/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","pubmed_melatonin"],"source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","scope":"ingredient_context","inference_level":"gap","observed_at":"2026-07-31","presentation_tone":"gap","evidence_id":"ev-6432fa73931f","evidence_url":"https://lookcloser.ai/e/ev-6432fa73931f","content_fingerprint":"sha256:30df6ecd93319d6dc90d0daec766dd75ab53ac9af7ab10f2770506fbd7bb03c3","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","pubmed_melatonin"],"source_records":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-07-31","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":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"},{"source":"pubmed_melatonin","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=melatonin+dose+sleep+onset+meta-analysis","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-31","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/850038130176/full#finding-nih-published-research-magnesium-amount-in-daily-intake-context"},{"id":"nih-published-research-reaching-a-studied-dose-costs-about-29-month","source":"NIH / published research","class":"gap","noted":false,"severity":"info","weight":22,"headline":"Reaching a studied dose costs about $29/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 $29 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 $29 per month. A price observation, not a recommendation.","identity_basis":"ingredient","status":"live","source_refs":["nih_ods_magnesium","pubmed_magnesium","pubmed_melatonin"],"source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","scope":"ingredient_context","inference_level":"gap","observed_at":"2026-07-31","presentation_tone":"gap","evidence_id":"ev-6fffba11cba9","evidence_url":"https://lookcloser.ai/e/ev-6fffba11cba9","content_fingerprint":"sha256:c16f4972a4a0a9a7255d2c3563f8483bd0ba678ab9663cbf1a948ac34d675bd8","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 $29 per month. A price observation, not a recommendation.","source_refs":["nih_ods_magnesium","pubmed_magnesium","pubmed_melatonin"],"source_records":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-07-31","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":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"},{"source":"pubmed_melatonin","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=melatonin+dose+sleep+onset+meta-analysis","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-31","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 $29 per month. A price observation, not a recommendation."},"html_anchor":"finding-nih-published-research-reaching-a-studied-dose-costs-about-29-month","report_url":"https://lookcloser.ai/p/850038130176/full#finding-nih-published-research-reaching-a-studied-dose-costs-about-29-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, melatonin 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, melatonin 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","pubmed_melatonin"],"source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","scope":"ingredient_context","inference_level":"gap","observed_at":"2026-07-31","presentation_tone":"gap","evidence_id":"ev-8dc32b124bbd","evidence_url":"https://lookcloser.ai/e/ev-8dc32b124bbd","content_fingerprint":"sha256:a5f7ea49a96a7e277cdd2876fbcd21e8836e89e91d21df0deae3347a6e4e5b63","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, melatonin 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","pubmed_melatonin"],"source_records":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-07-31","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":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"},{"source":"pubmed_melatonin","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=melatonin+dose+sleep+onset+meta-analysis","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-31","looked":"LookCloser checked NIH / published research.","found":"Published sources describe how magnesium, melatonin 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/850038130176/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/B0BMQR925S","scope":"exact_listing","inference_level":"gap","observed_at":"2026-07-31","presentation_tone":"gap","evidence_id":"ev-52b86934ea3a","evidence_url":"https://lookcloser.ai/e/ev-52b86934ea3a","content_fingerprint":"sha256:2fa56447fd09493a6c4b693d103ea8ed38c4c9e17ecd9ace7d760683daecbc3a","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/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","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/850038130176/full#finding-label-and-serving-arithmetic-public-label-filing-not-retained"},{"id":"fda-public-records-recall-search-no-match-found-as-of-aug-02-2026","source":"FDA public records","class":"gap","noted":false,"severity":"info","weight":19,"headline":"Recall search: no match found (as of Aug 02, 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":"2026-07-31","presentation_tone":"caution","evidence_id":"ev-c5f2668f1821","evidence_url":"https://lookcloser.ai/e/ev-c5f2668f1821","content_fingerprint":"sha256:4d1ab23b533e11b3ba0f0a9d0c6c3242efd1ae3dbd6570ddaa86bc8378576e35","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":"2026-07-31","identity_basis":"search_only","scope":"product_or_brand","registry_name":"FDA enforcement","identifier":"NATURAL STACKS","receipt_label":"FDA enforcement search · NATURAL STACKS"}],"observed_at":"2026-07-31","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-02-2026","report_url":"https://lookcloser.ai/p/850038130176/full#finding-fda-public-records-recall-search-no-match-found-as-of-aug-02-2026"},{"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-B0BMQR925S","scope":"exact_listing","inference_level":"gap","observed_at":"2026-07-31","presentation_tone":"gap","evidence_id":"ev-d6e1677ab045","evidence_url":"https://lookcloser.ai/e/ev-d6e1677ab045","content_fingerprint":"sha256:b8001af27f419466ba75fb7095c1dfc9f4a2019ba6cb6d7c2be5fe7ed2789a8a","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-B0BMQR925S","observed_at":"2026-07-31","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","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/850038130176/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 95 on 2025-06-30 to 130 on 2026-07-22 (net +35). 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 95 on 2025-06-30 to 130 on 2026-07-22 (net +35). 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-B0BMQR925S","scope":"exact_listing","inference_level":"gap","observed_at":"2026-07-31","presentation_tone":"gap","evidence_id":"ev-4d90aff9678d","evidence_url":"https://lookcloser.ai/e/ev-4d90aff9678d","content_fingerprint":"sha256:680aba1aabf35e2cfd345dc359ffa94fdbdca7d87f56232b2566857f2050584f","registry_receipts":[],"evidence":{"summary":"Exact-listing history records written-review counts from 95 on 2025-06-30 to 130 on 2026-07-22 (net +35). 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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/850038130176/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":"2026-07-31","presentation_tone":"gap","evidence_id":"ev-ffeb5df59b04","evidence_url":"https://lookcloser.ai/e/ev-ffeb5df59b04","content_fingerprint":"sha256:ae429c994af10106e1f9ffbc4a67320233f91b15a1ac2890110c255f5692ed98","registry_receipts":[],"evidence":{"summary":"This record does not hold an exact, supplement-class public ownership record for the brand. 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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/850038130176/full#finding-lookcloser-record-check-brand-ownership-record-not-retained"}],"evidence_records":[{"evidence_id":"ev-efeaeef5c45b","record_id":"850038130176","gtin":"850038130176","claim_key":"finding:serving_mass_impossibility","primary_source":"facts_panel","claim":"The label says 11.2 g of magnesium in 4 gummies — but not what those 4 gummies weigh","bucket":"claimed_no_support","looked":"LookCloser checked Label and serving arithmetic.","found":"A serving is 4 gummies, and the panel declares 11,200 mg — 11.2 g — of magnesium in that serving. What the panel doesn’t give is the one number needed to check it: what a serving weighs. Gummies of this type usually run somewhere around 2.5 to 3.5 grams each, which would put 4 of them near 10 to 14 grams. If that holds here, magnesium would be a high share of the serving’s weight, and that is why we stopped on this number. But we did not weigh these gummies. The 2.5–3.5 gram figure is a general estimate for the format, not a measurement of this product. One published number would settle it: the weight of one gummy, or of a 4-gummy serving. Until then we can’t confirm the 11.2 g and we can’t dispute it. Nothing here says the product is short — only that the label doesn’t let anyone check. Checked August 2, 2026.","proof":{"declared_contents_mg":11200,"active_total_mg":4200,"carbohydrate_mg":7000,"typical_gummy_mass_g":[2.5,3.5],"serving_count":4,"serving_weight_stated":false,"stated_serving_mass_mg":null},"source_refs":[{"source":"facts_panel","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:6688626ade625687a51486b82593f8d0449cfeb85111d72812dec82adbf3d96a","evidence_url":"https://lookcloser.ai/e/ev-efeaeef5c45b"},{"evidence_id":"ev-02880d9334a9","record_id":"850038130176","gtin":"850038130176","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 “Sleep Magnesium Gummies” (variant: Default Title) — identity confirmed across retailer listings.","proof":{"detail":"The brand's store lists this exact barcode as “Sleep Magnesium Gummies” (variant: Default Title) — identity confirmed across retailer listings."},"source_refs":[{"source":"brand_store","source_url":"https://naturalstacks.com/products/sleep-magnesium-gummies-30ct","observed_at":"2026-07-31","identity_basis":"exact_gtin","scope":"brand_or_exact_product"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:b9c8d484853a87b945dcdf72ba1a69b4898850d0906ae8997b96c0aac0249756","evidence_url":"https://lookcloser.ai/e/ev-02880d9334a9"},{"evidence_id":"ev-8a60802b694d","record_id":"850038130176","gtin":"850038130176","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":"Open Food Facts resolves 850038130176 to \"Magnesium Gummies SLEEP\" (Natural Stacks) — consistent with this listing.","proof":{"detail":"Open Food Facts resolves 850038130176 to \"Magnesium Gummies SLEEP\" (Natural Stacks) — consistent with this listing."},"source_refs":[{"source":"barcode_search","source_url":"https://world.openfoodfacts.org/product/00850038130176","observed_at":"2026-07-31","identity_basis":"gtin","scope":"exact_gtin"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:f05bdb4f122c2e5426de70b47587bd768cde48d8342999551921e9bee2d739b4","evidence_url":"https://lookcloser.ai/e/ev-8a60802b694d"},{"evidence_id":"ev-a0082c268e5b","record_id":"850038130176","gtin":"850038130176","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 / 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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":"2026-07-31","identity_basis":"search_only","scope":"product_or_brand","registry_name":"FDA enforcement","identifier":"NATURAL STACKS","receipt_label":"FDA enforcement search · NATURAL STACKS"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:4d1ab23b533e11b3ba0f0a9d0c6c3242efd1ae3dbd6570ddaa86bc8378576e35","evidence_url":"https://lookcloser.ai/e/ev-c5f2668f1821"},{"evidence_id":"ev-54c796ef6eb7","record_id":"850038130176","gtin":"850038130176","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 (as Magnesium Citrate) 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 (as Magnesium Citrate) 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/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:e53633f8be36e88aaadfa1d943664fbe40c2fe0856524f53d3ebbc25b40666a8","evidence_url":"https://lookcloser.ai/e/ev-54c796ef6eb7"},{"evidence_id":"ev-52b86934ea3a","record_id":"850038130176","gtin":"850038130176","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/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:2fa56447fd09493a6c4b693d103ea8ed38c4c9e17ecd9ace7d760683daecbc3a","evidence_url":"https://lookcloser.ai/e/ev-52b86934ea3a"},{"evidence_id":"ev-4d90aff9678d","record_id":"850038130176","gtin":"850038130176","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 95 on 2025-06-30 to 130 on 2026-07-22 (net +35). 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 95 on 2025-06-30 to 130 on 2026-07-22 (net +35). 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-B0BMQR925S","observed_at":"2026-07-31","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:680aba1aabf35e2cfd345dc359ffa94fdbdca7d87f56232b2566857f2050584f","evidence_url":"https://lookcloser.ai/e/ev-4d90aff9678d"},{"evidence_id":"ev-d6e1677ab045","record_id":"850038130176","gtin":"850038130176","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-B0BMQR925S","observed_at":"2026-07-31","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:b8001af27f419466ba75fb7095c1dfc9f4a2019ba6cb6d7c2be5fe7ed2789a8a","evidence_url":"https://lookcloser.ai/e/ev-d6e1677ab045"},{"evidence_id":"ev-6432fa73931f","record_id":"850038130176","gtin":"850038130176","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":"2026-07-31","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":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"},{"source":"pubmed_melatonin","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=melatonin+dose+sleep+onset+meta-analysis","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:30df6ecd93319d6dc90d0daec766dd75ab53ac9af7ab10f2770506fbd7bb03c3","evidence_url":"https://lookcloser.ai/e/ev-6432fa73931f"},{"evidence_id":"ev-8dc32b124bbd","record_id":"850038130176","gtin":"850038130176","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, melatonin 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, melatonin 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":"2026-07-31","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":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"},{"source":"pubmed_melatonin","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=melatonin+dose+sleep+onset+meta-analysis","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:a5f7ea49a96a7e277cdd2876fbcd21e8836e89e91d21df0deae3347a6e4e5b63","evidence_url":"https://lookcloser.ai/e/ev-8dc32b124bbd"},{"evidence_id":"ev-6fffba11cba9","record_id":"850038130176","gtin":"850038130176","claim_key":"finding:nih-published-research-reaching-a-studied-dose-costs-about-29-month","primary_source":"nih_ods_magnesium","claim":"Reaching a studied dose costs about $29/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 $29 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 $29 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":"2026-07-31","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":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"},{"source":"pubmed_melatonin","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=melatonin+dose+sleep+onset+meta-analysis","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:c16f4972a4a0a9a7255d2c3563f8483bd0ba678ab9663cbf1a948ac34d675bd8","evidence_url":"https://lookcloser.ai/e/ev-6fffba11cba9"},{"evidence_id":"ev-ffeb5df59b04","record_id":"850038130176","gtin":"850038130176","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":"2026-07-31","identity_basis":"exact_wordmark_and_supplement_goods","scope":"brand","registry_name":"USPTO"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:ae429c994af10106e1f9ffbc4a67320233f91b15a1ac2890110c255f5692ed98","evidence_url":"https://lookcloser.ai/e/ev-ffeb5df59b04"},{"evidence_id":"ev-9b29eed8abcd","record_id":"850038130176","gtin":"850038130176","claim_key":"claim:efficacy","primary_source":"source_listing","claim":"“Experience MagSleep 💤 - Get all the support you need to fall asleep faster, stay asleep longer, and wake up feeling refreshed with Natural Stacks…”","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":"…💤 Experience MagSleep 💤 - Get all the support you need to fall asleep faster, stay asleep longer, and wake up feeling refreshed with Natural Stacks Magnesium Sleep gummi"},"source_refs":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-07-31","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":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"},{"source":"nih_ods_melatonin","source_url":"https://ods.od.nih.gov/factsheets/Melatonin-HealthProfessional/","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"melatonin","receipt_label":"NIH ODS · melatonin fact sheet"},{"source":"pubmed_melatonin","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=melatonin+dose+sleep+onset+meta-analysis","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:73e7b21486e78e686a044ab11f12b8b7cc80631ff2950072ec6f326617dc618a","evidence_url":"https://lookcloser.ai/e/ev-9b29eed8abcd"},{"evidence_id":"ev-a166bceee6f6","record_id":"850038130176","gtin":"850038130176","claim_key":"dose:magnesium","primary_source":"facts_panel","claim":"“Magnesium 200 mg per serving”","bucket":"checks_out","looked":"the listing dose against the exact same named panel subject","found":"The label promises 200 mg per serving. The panel says 200 mg. They match.","proof":{"subject":"magnesium","listing_amount_mg":200,"panel_amount_mg":200,"panel_source":"listing_image","tolerance_mg":4},"source_refs":[{"source":"facts_panel","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0BMQR925S","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:29854572dd149f04e456b0d530c6961ed0b54777d2de439713c79c4a6054d595","evidence_url":"https://lookcloser.ai/e/ev-a166bceee6f6"}],"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":4200,"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":null,"servings":null,"pack_count":1,"units_conflict":false},"marketing_text":["IMPROVED FLAVOR!","FALL AND STAY ASLEEP","WITH MELATONIN & CHAMOMILE","MIXED BERRY with other natural flavor","30 VEGAN GUMMIES","DIETARY SUPPLEMENT","MIXED BERRY","Fall asleep faster, stay asleep longer, and wake up feeling refreshed.","200mg Elemental Magnesium per serving","EASY TO TAKE!"],"certification_text":["NON GMO Project VERIFIED","Vegan","GLUTEN FREE","NON GMO","VEGAN","PALEO FRIENDLY","Non-GMO Project Verified","NON GMO PROJECT VERIFIED"],"claim_checks":[{"kind":"efficacy","label":"Benefit claim","snippet":"…💤 Experience MagSleep 💤 - Get all the support you need to fall asleep faster, stay asleep longer, and wake up feeling refreshed with Natural Stacks Magnesium Sleep gummi","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\": \"MAGNESIUM GUMMIES SLEEP\", \"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\": \"30 VEGAN GUMMIES\", \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"IMPROVED FLAVOR!\", \"FALL AND STAY ASLEEP\", \"WITH MELATONIN & CHAMOMILE\", \"MIXED BERRY with other natural flavor\", \"30 VEGAN GUMMIES\", \"DIETARY 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SUPPLEMENT\"], \"certifications\": [\"Non-GMO Project Verified\", \"Vegan\"]}\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\": [], \"actives\": [], \"label_claims\": [\"EASY TO TAKE!\", \"Take two gummies before you fall asleep.\", \"MIXED BERRY\", \"with other natural flavor\"], \"certifications\": []}\n```\n"},{"img":4,"model":"claude-cli:subscription","text":"```json\n{\n  \"brand\": \"NATURAL STACKS\",\n  \"product_name\": \"MAGNESIUM GUMMIES SLEEP\",\n  \"barcode\": null,\n  \"panel\": false,\n  \"serving_size_text\": null,\n  \"serving_size_g\": null,\n  \"servings_per_container\": null,\n  \"net_weight_text\": null,\n  \"net_weight_g\": null,\n  \"unit_count_text\": null,\n  \"responsible_parties\": [],\n  \"websites\": [],\n  \"actives\": [],\n  \"label_claims\": [\n    \"Experience SLEEP MAGNESIUM GUMMIES\",\n    \"A blend of Magnesium, Chamomile and Melatonin to help provide sleep support.*\",\n    \"FALL AND STAY ASLEEP\",\n    \"WITH MELATONIN & CHAMOMILE\",\n    \"IMPROVED FLAVOR!\",\n    \"MIXED BERRY\"\n  ],\n  \"certifications\": [\n    \"NON GMO PROJECT VERIFIED\"\n  ]\n}\n```\n"},{"img":5,"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\": [\"NaturalStacks.com\", \"HTTPS://WWW.NATURALSTACKS.COM/PAGES/OPEN-SOURCE\"], \"actives\": [], \"label_claims\": [\"INGREDIENT TRACEABILITY\", \"3RD PARTY LAB TESTING\", \"FULL LABEL DISCLOSURE\", \"SCAN THE QR CODE TO SEE THE 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