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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-B07CWCCS4V","scope":"exact_listing","inference_level":"gap","observed_at":"2026-07-25","presentation_tone":"gap","evidence_id":"ev-8ab0888274e5","evidence_url":"https://lookcloser.ai/e/ev-8ab0888274e5","content_fingerprint":"sha256:5f3f4cec6180f8cff93c21c4bd1b6a32a88ba9026932d07ea8de855f6ad71fd6","registry_receipts":[],"evidence":{"summary":"The paid catalog links this exact item to a parent listing. 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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/lc-13f9d869/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","severity":"info","weight":16,"headline":"180-day review-count history is on file","detail":"Exact-listing history records written-review counts from 539 on 2026-01-28 to 580 on 2026-07-13 (net +41). 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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-B07CWCCS4V","scope":"exact_listing","inference_level":"gap","observed_at":"2026-07-25","presentation_tone":"gap","evidence_id":"ev-095d7303c0cd","evidence_url":"https://lookcloser.ai/e/ev-095d7303c0cd","content_fingerprint":"sha256:37e62e3d6497006b94d18971c25647fae18d13ab2e393f8a439dbad4e5f47d36","registry_receipts":[],"evidence":{"summary":"Exact-listing history records written-review counts from 539 on 2026-01-28 to 580 on 2026-07-13 (net +41). 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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":"2026-07-25","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":"2026-07-25","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":"2026-07-25","identity_basis":"named_ingredient","scope":"ingredient"},{"source":"pubmed_zinc","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=zinc+supplementation+randomized","observed_at":"2026-07-25","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-25","content_fingerprint":"sha256:1e667eb90abfcc4f3939e5e9c661b3595c8e25d148751bb6250004f5e9b80586","evidence_url":"https://lookcloser.ai/e/ev-385b7934717c"},{"evidence_id":"ev-bad700def50f","record_id":"lc-13f9d869","gtin":null,"claim_key":"finding:nih-published-research-each-ingredient-s-amount-is-disclosed","primary_source":"nih_ods_magnesium","claim":"Each ingredient’s amount is disclosed","bucket":"checks_out","looked":"LookCloser checked NIH / published research.","found":"The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.","proof":{"detail":"The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research."},"source_refs":[{"source":"nih_ods_magnesium","source_url":"https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/","observed_at":"2026-07-25","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":"2026-07-25","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":"2026-07-25","identity_basis":"named_ingredient","scope":"ingredient"},{"source":"pubmed_zinc","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=zinc+supplementation+randomized","observed_at":"2026-07-25","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-25","content_fingerprint":"sha256:911b074725a7fff66d1d691d534ca1dce07ab7473b5e3f3f31a4548e3f6bccf8","evidence_url":"https://lookcloser.ai/e/ev-bad700def50f"},{"evidence_id":"ev-f5aa2b2c3cf3","record_id":"lc-13f9d869","gtin":null,"claim_key":"finding:label-and-serving-arithmetic-photo-read-pack-math-is-internally-consiste","primary_source":"facts_panel","claim":"Photo-read pack math is internally consistent","bucket":"unverified","looked":"LookCloser checked Label and serving arithmetic.","found":"50 servings × 9.3 g = 465 g, matching the printed net weight 475 g (NET WT 16.5 OZ (475g)). This checks agreement within the photo read; it is not an independent contents test.","proof":{"detail":"50 servings × 9.3 g = 465 g, matching the printed net weight 475 g (NET WT 16.5 OZ (475g)). This checks agreement within the photo read; it is not an independent contents test."},"source_refs":[{"source":"facts_panel","source_url":"https://www.amazon.com/dp/B07CWCCS4V","observed_at":"2026-07-25","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B07CWCCS4V","observed_at":"2026-07-25","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-25","content_fingerprint":"sha256:43bb287afa0644b59c059fd60c98d8ab8a746d183747b02017222ee018e07328","evidence_url":"https://lookcloser.ai/e/ev-f5aa2b2c3cf3"},{"evidence_id":"ev-307d4ab1a282","record_id":"lc-13f9d869","gtin":null,"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 Alacer Corporation (CORPORATION; LIMITED LIABILITY COMPANY) in CALIFORNIA, USA; 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 Alacer Corporation (CORPORATION; LIMITED LIABILITY COMPANY) in CALIFORNIA, USA; 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=78668672&caseSearchType=US_APPLICATION&caseType=DEFAULT&searchType=statusSearch","observed_at":"2026-07-25","identity_basis":"exact_wordmark_and_supplement_goods","scope":"brand","registry_name":"USPTO","identifier":"Registration 3181945","receipt_label":"USPTO · Registration 3181945"}],"observed_at":"2026-07-25","content_fingerprint":"sha256:9416ea555574bf3a35d014aec4d9ce8f68ca616e698f7cb35ec084c1a4c0d054","evidence_url":"https://lookcloser.ai/e/ev-307d4ab1a282"},{"evidence_id":"ev-095d7303c0cd","record_id":"lc-13f9d869","gtin":null,"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 539 on 2026-01-28 to 580 on 2026-07-13 (net +41). 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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-B07CWCCS4V","observed_at":"2026-07-25","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B07CWCCS4V","observed_at":"2026-07-25","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-25","content_fingerprint":"sha256:37e62e3d6497006b94d18971c25647fae18d13ab2e393f8a439dbad4e5f47d36","evidence_url":"https://lookcloser.ai/e/ev-095d7303c0cd"},{"evidence_id":"ev-8ab0888274e5","record_id":"lc-13f9d869","gtin":null,"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. 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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-B07CWCCS4V","observed_at":"2026-07-25","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B07CWCCS4V","observed_at":"2026-07-25","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-25","content_fingerprint":"sha256:5f3f4cec6180f8cff93c21c4bd1b6a32a88ba9026932d07ea8de855f6ad71fd6","evidence_url":"https://lookcloser.ai/e/ev-8ab0888274e5"},{"evidence_id":"ev-b4e8fd61659e","record_id":"lc-13f9d869","gtin":null,"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 544 to 580 across 2026-02-02 – 2026-07-13 with no single manufactured spike (largest 30-day gain ~18).","proof":{"first":["2026-02-02",544],"last":["2026-07-13",580],"max_30d_review_gain":18},"source_refs":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B07CWCCS4V","observed_at":"2026-07-25","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-25","content_fingerprint":"sha256:5198dc621b4d756438122adf9dfd26c19d7bb049aea2134c9b799a4de4e188f8","evidence_url":"https://lookcloser.ai/e/ev-b4e8fd61659e"},{"evidence_id":"ev-526212e5ade3","record_id":"lc-13f9d869","gtin":null,"claim_key":"claim:efficacy","primary_source":"source_listing","claim":"“Emergen-C Vitamin C 1000mg Immune Support Powder, Orange, 50 Packets 50ct of”","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":"Emergen-C Vitamin C 1000mg Immune Support Powder, Orange, 50 Packets 50ct of Emergen-C…"},"source_refs":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B07CWCCS4V","observed_at":"2026-07-25","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"nih_ods_vitamin-c","source_url":"https://ods.od.nih.gov/factsheets/VitaminC-HealthProfessional/","observed_at":"2026-07-25","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"vitamin c","receipt_label":"NIH ODS · vitamin c fact 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