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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/016500596424#finding-nih-published-research-research-context-is-available-for-the-listed-ingr"},{"id":"review_velocity_gradual","source":"keepa","class":"ok","weight":20,"headline":"Reviews accumulated gradually","detail":"Written reviews grew from 826 to 947 across 2026-02-01 – 2026-07-22 with no single manufactured spike (largest 30-day gain ~21).","proof":{"first":["2026-02-01",826],"last":["2026-07-22",947],"max_30d_review_gain":21},"identity_basis":"listing","status":"live","severity":"ok","source_refs":["source_listing"],"source_url":"https://www.amazon.com/dp/B09KF8MKB8","scope":"exact_listing","inference_level":"direct_observation","observed_at":"2026-07-23","presentation_tone":"ok","evidence_id":"ev-a1d409d8e8cc","evidence_url":"https://lookcloser.ai/e/ev-a1d409d8e8cc","content_fingerprint":"sha256:f720c06893a202af9ff8c59b42893af2e32177869023d0d542953a0fa15fdcff","registry_receipts":[],"evidence":{"summary":{"first":["2026-02-01",826],"last":["2026-07-22",947],"max_30d_review_gain":21},"source_refs":["source_listing"],"source_records":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-23","looked":"LookCloser checked keepa.","found":"Written reviews grew from 826 to 947 across 2026-02-01 – 2026-07-22 with no single manufactured spike (largest 30-day gain ~21)."},"html_anchor":"finding-review_velocity_gradual","report_url":"https://lookcloser.ai/p/016500596424#finding-review_velocity_gradual"},{"id":"keepa-exact-listing-history-this-item-belongs-to-a-catalog-variation-fam","source":"Keepa exact-listing history","class":"gap","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-B09KF8MKB8","scope":"exact_listing","inference_level":"gap","observed_at":"2026-07-23","presentation_tone":"gap","evidence_id":"ev-0f3742839b9e","evidence_url":"https://lookcloser.ai/e/ev-0f3742839b9e","content_fingerprint":"sha256:ac536ccbeaa34dfd6c0ef6176d802488db92a9229b1bd61bbc99dc150f558c4b","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-B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-23","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/016500596424#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","severity":"info","weight":16,"headline":"180-day review-count history is on file","detail":"Exact-listing history records written-review counts from 826 on 2026-02-01 to 947 on 2026-07-22 (net +121). 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 826 on 2026-02-01 to 947 on 2026-07-22 (net +121). 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-B09KF8MKB8","scope":"exact_listing","inference_level":"gap","observed_at":"2026-07-23","presentation_tone":"gap","evidence_id":"ev-2427b94bf3ef","evidence_url":"https://lookcloser.ai/e/ev-2427b94bf3ef","content_fingerprint":"sha256:b64630d3fdf8196c6266d25bf606f61a2d00ada063ab864c9d96254416373937","registry_receipts":[],"evidence":{"summary":"Exact-listing history records written-review counts from 826 on 2026-02-01 to 947 on 2026-07-22 (net +121). 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-B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-23","looked":"LookCloser checked Keepa exact-listing history.","found":"Exact-listing history records written-review counts from 826 on 2026-02-01 to 947 on 2026-07-22 (net +121). 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/016500596424#finding-keepa-exact-listing-history-180-day-review-count-history-is-on-file"}],"evidence_records":[{"evidence_id":"ev-d1b665ba762e","record_id":"016500596424","gtin":"016500596424","claim_key":"finding:label-and-serving-arithmetic-multi-ingredient-formula-panel-read-serving","primary_source":"facts_panel","claim":"Multi-ingredient formula — panel read, serving weight unknown","bucket":"unverified","looked":"LookCloser checked Label and serving arithmetic.","found":"We read the full Supplement Facts panel from the listing-image panel (below), but the label doesn’t state a serving weight, so the arithmetic can’t run. A gap in the label’s information, not evidence of a problem.","proof":{"detail":"We read the full Supplement Facts panel from the listing-image panel (below), but the label doesn’t state a serving weight, so the arithmetic can’t run. A gap in the label’s information, not evidence of a problem."},"source_refs":[{"source":"facts_panel","source_url":"https://www.amazon.com/dp/B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-23","content_fingerprint":"sha256:30377812ed6e6a925ca8557cd78f0971382b202a8ba16cad26c58a1d2ecc490a","evidence_url":"https://lookcloser.ai/e/ev-d1b665ba762e"},{"evidence_id":"ev-28d03b65ef25","record_id":"016500596424","gtin":"016500596424","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, zinc 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, zinc 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":"2026-07-23","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"magnesium","receipt_label":"NIH ODS — Magnesium fact sheet"},{"source":"nih_ods_zinc","source_url":"https://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/","observed_at":"2026-07-23","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"zinc","receipt_label":"NIH ODS — Zinc fact sheet"},{"source":"pubmed_magnesium","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=magnesium+glycinate+supplementation","observed_at":"2026-07-23","identity_basis":"named_ingredient","scope":"ingredient"},{"source":"pubmed_zinc","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=zinc+supplementation+randomized","observed_at":"2026-07-23","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-23","content_fingerprint":"sha256:88c0e43e09aef31e8fd2a9ad09efa6dcb791006f30d241b4e82d39810d38926f","evidence_url":"https://lookcloser.ai/e/ev-28d03b65ef25"},{"evidence_id":"ev-554d20673830","record_id":"016500596424","gtin":"016500596424","claim_key":"finding:nih-label-catalog-registered-in-nih-s-supplement-label-database-dsld","primary_source":"nih_dsld_search","claim":"Registered in NIH's supplement label database (DSLD)","bucket":"checks_out","looked":"LookCloser checked NIH label catalog.","found":"Label #178201 “Women's 50+ Healthy Advantage” (Bayer One A Day), entered 2018-06-25, with the full Supplement Facts on file — see the panel below. Company on file: Distributor — Bayer HealthCare LLC, Whippany, NJ.","proof":{"detail":"Label #178201 “Women's 50+ Healthy Advantage” (Bayer One A Day), entered 2018-06-25, with the full Supplement Facts on file — see the panel below. Company on file: Distributor — Bayer HealthCare LLC, Whippany, NJ."},"source_refs":[{"source":"nih_dsld_search","source_url":"https://dsld.od.nih.gov/label/178201","observed_at":"2026-07-23","identity_basis":"brand_product_name","scope":"product_label","registry_name":"NIH DSLD","identifier":"Label #178201","receipt_label":"NIH DSLD · Label #178201"}],"observed_at":"2026-07-23","content_fingerprint":"sha256:cfc9d2e7dc05143fcd07ac71b5e3766a547d2fbcc5a22738b14bd298c8b1c7c5","evidence_url":"https://lookcloser.ai/e/ev-554d20673830"},{"evidence_id":"ev-1c1d2d77d764","record_id":"016500596424","gtin":"016500596424","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 Bayer HealthCare LLC (LIMITED LIABILITY COMPANY) in DELAWARE, 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 Bayer HealthCare LLC (LIMITED LIABILITY COMPANY) in DELAWARE, 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=87015957&caseSearchType=US_APPLICATION&caseType=DEFAULT&searchType=statusSearch","observed_at":"2026-07-23","identity_basis":"exact_wordmark_and_supplement_goods","scope":"brand","registry_name":"USPTO","identifier":"Registration 5198339","receipt_label":"USPTO · Registration 5198339"}],"observed_at":"2026-07-23","content_fingerprint":"sha256:73b82dc9f134ccd335d788d7755a7c8dc375fd098474763a1c40b353d685904f","evidence_url":"https://lookcloser.ai/e/ev-1c1d2d77d764"},{"evidence_id":"ev-0eb0bbc5498d","record_id":"016500596424","gtin":"016500596424","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 016500596424 to \"oneAday\" (One A Day) — consistent with this listing.","proof":{"detail":"Open Food Facts resolves 016500596424 to \"oneAday\" (One A Day) — consistent with this listing."},"source_refs":[{"source":"barcode_search","source_url":"https://world.openfoodfacts.org/product/16500596424","observed_at":"2026-07-23","identity_basis":"gtin","scope":"exact_gtin"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-23","content_fingerprint":"sha256:e6077c79a1269a1a01f93f439983a4a00f01db7b85795e9b09da70d404508104","evidence_url":"https://lookcloser.ai/e/ev-0eb0bbc5498d"},{"evidence_id":"ev-2427b94bf3ef","record_id":"016500596424","gtin":"016500596424","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 826 on 2026-02-01 to 947 on 2026-07-22 (net +121). 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 826 on 2026-02-01 to 947 on 2026-07-22 (net +121). 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-B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-23","content_fingerprint":"sha256:b64630d3fdf8196c6266d25bf606f61a2d00ada063ab864c9d96254416373937","evidence_url":"https://lookcloser.ai/e/ev-2427b94bf3ef"},{"evidence_id":"ev-0f3742839b9e","record_id":"016500596424","gtin":"016500596424","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-B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-23","content_fingerprint":"sha256:ac536ccbeaa34dfd6c0ef6176d802488db92a9229b1bd61bbc99dc150f558c4b","evidence_url":"https://lookcloser.ai/e/ev-0f3742839b9e"},{"evidence_id":"ev-a1d409d8e8cc","record_id":"016500596424","gtin":"016500596424","claim_key":"finding:review_velocity_gradual","primary_source":"source_listing","claim":"Reviews accumulated gradually","bucket":"checks_out","looked":"LookCloser checked keepa.","found":"Written reviews grew from 826 to 947 across 2026-02-01 – 2026-07-22 with no single manufactured spike (largest 30-day gain ~21).","proof":{"first":["2026-02-01",826],"last":["2026-07-22",947],"max_30d_review_gain":21},"source_refs":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-23","content_fingerprint":"sha256:f720c06893a202af9ff8c59b42893af2e32177869023d0d542953a0fa15fdcff","evidence_url":"https://lookcloser.ai/e/ev-a1d409d8e8cc"},{"evidence_id":"ev-927ec8685d3e","record_id":"016500596424","gtin":"016500596424","claim_key":"claim:efficacy","primary_source":"source_listing","claim":"Advertised health or performance benefit","bucket":"partly","looked":"whether the ingredient doses on the label match the doses used in published research","found":"Published research exists for ingredients in this formula — see Related research below. Whether this product’s doses match those studies could not be confirmed.","proof":{"kind":"efficacy","status":"partly","snippet":"…D, Tablet, 200 Count (Pack of 1) Nutritional support for what matters most: One A Day Men’s 50+ v…"},"source_refs":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B09KF8MKB8","observed_at":"2026-07-23","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"nih_ods_vitamin-a","source_url":"https://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/","observed_at":"2026-07-23","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"vitamin a","receipt_label":"NIH ODS · vitamin a fact 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