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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/023249092193/full#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 138 to 259 across 2026-02-15 – 2026-07-14 with no single manufactured spike (largest 30-day gain ~29).","proof":{"first":["2026-02-15",138],"last":["2026-07-14",259],"max_30d_review_gain":29},"identity_basis":"listing","status":"live","severity":"ok","source_refs":["source_listing"],"source_url":"https://www.amazon.com/dp/B0D3VPJTMJ","scope":"exact_listing","inference_level":"direct_observation","observed_at":"2026-07-25","presentation_tone":"ok","evidence_id":"ev-1a61566de504","evidence_url":"https://lookcloser.ai/e/ev-1a61566de504","content_fingerprint":"sha256:815df0e5b36997c5ba82bd113edb6d66d0f59171d66fc32b3847d61b1cdeb01e","registry_receipts":[],"evidence":{"summary":{"first":["2026-02-15",138],"last":["2026-07-14",259],"max_30d_review_gain":29},"source_refs":["source_listing"],"source_records":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B0D3VPJTMJ","observed_at":"2026-07-25","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-25","looked":"LookCloser checked keepa.","found":"Written reviews grew from 138 to 259 across 2026-02-15 – 2026-07-14 with no single manufactured spike (largest 30-day gain ~29)."},"html_anchor":"finding-review_velocity_gradual","report_url":"https://lookcloser.ai/p/023249092193/full#finding-review_velocity_gradual"},{"id":"label-and-serving-arithmetic-public-label-filing-not-retained","source":"Label and serving arithmetic","class":"gap","severity":"info","weight":19,"headline":"Public label filing not retained","detail":"This record does not currently hold an identity-bound public label filing for the exact product. 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That is a LookCloser coverage gap, not evidence that no filing exists."},"html_anchor":"finding-label-and-serving-arithmetic-public-label-filing-not-retained","report_url":"https://lookcloser.ai/p/023249092193/full#finding-label-and-serving-arithmetic-public-label-filing-not-retained"},{"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. 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