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No exact-listing count history was available, so no review-pattern claim is made."},"html_anchor":"finding-keepa-exact-listing-history-review-count-history-not-available","report_url":"https://lookcloser.ai/p/lc-ea01040b/full#finding-keepa-exact-listing-history-review-count-history-not-available"},{"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 25 mg; the photo-read Supplement Facts panel shows Zinc (Zinc Sulfate Heptahydrate) at 25 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.","proof":"The listing claims 25 mg; the photo-read Supplement Facts panel shows Zinc (Zinc Sulfate Heptahydrate) at 25 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/B087Z1RSNY","scope":"exact_listing","inference_level":"gap","observed_at":"2026-07-31","presentation_tone":"gap","evidence_id":"ev-2a2b29762111","evidence_url":"https://lookcloser.ai/e/ev-2a2b29762111","content_fingerprint":"sha256:687c65abf4ff5f7540b7164d844d2150f2bdb8962c71128fe1563c6807ce94a2","registry_receipts":[],"evidence":{"summary":"The listing claims 25 mg; the photo-read Supplement Facts panel shows Zinc (Zinc Sulfate Heptahydrate) at 25 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/B087Z1RSNY","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B087Z1RSNY","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 25 mg; the photo-read Supplement Facts panel shows Zinc (Zinc Sulfate Heptahydrate) at 25 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/lc-ea01040b/full#finding-label-and-serving-arithmetic-listing-claim-matches-the-supplement-facts-"},{"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 zinc have been studied. 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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/lc-ea01040b/full#finding-lookcloser-record-check-brand-ownership-record-not-retained"}],"evidence_records":[{"evidence_id":"ev-a0d4dd7b24be","record_id":"lc-ea01040b","gtin":null,"claim_key":"finding:nih-published-research-each-ingredient-s-amount-is-disclosed","primary_source":"nih_ods_zinc","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_zinc","source_url":"https://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"zinc","receipt_label":"NIH ODS — Zinc fact sheet"},{"source":"pubmed_zinc","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=zinc+supplementation+randomized","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:8bc00f367944b3df8e4434cfd67bb9ccea49cea16df329790383f50bacceed1b","evidence_url":"https://lookcloser.ai/e/ev-a0d4dd7b24be"},{"evidence_id":"ev-f29f1902dabd","record_id":"lc-ea01040b","gtin":null,"claim_key":"finding:fda-public-records-recall-search-no-match-found-as-of-aug-03-2026","primary_source":"openfda_search","claim":"Recall search: no match found (as of Aug 03, 2026)","bucket":"unverified","looked":"LookCloser checked FDA public records.","found":"This means only that no enforcement record matched the brand name — it does not mean the product was tested, reviewed, or cleared by FDA. New and untested products also have no recall records.","proof":{"detail":"This means only that no enforcement record matched the brand name — it does not mean the product was tested, reviewed, or cleared by FDA. New and untested products also have no recall records."},"source_refs":[{"source":"openfda_search","source_url":"https://api.fda.gov/food/enforcement.json?search=(recalling_firm:%22Quantum+Nutrition%22+OR+product_description:%22Quantum+Nutrition%22)&limit=5","observed_at":"2026-07-31","identity_basis":"search_only","scope":"product_or_brand","registry_name":"FDA enforcement","identifier":"Quantum Nutrition","receipt_label":"FDA enforcement search · Quantum Nutrition"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:0411526284c5b40d43cae5c54a0a43b5824d6efd2fabc2e864073234cda71ec3","evidence_url":"https://lookcloser.ai/e/ev-f29f1902dabd"},{"evidence_id":"ev-2a2b29762111","record_id":"lc-ea01040b","gtin":null,"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 25 mg; the photo-read Supplement Facts panel shows Zinc (Zinc Sulfate Heptahydrate) at 25 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.","proof":{"detail":"The listing claims 25 mg; the photo-read Supplement Facts panel shows Zinc (Zinc Sulfate Heptahydrate) at 25 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/B087Z1RSNY","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B087Z1RSNY","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:687c65abf4ff5f7540b7164d844d2150f2bdb8962c71128fe1563c6807ce94a2","evidence_url":"https://lookcloser.ai/e/ev-2a2b29762111"},{"evidence_id":"ev-052873fd58c4","record_id":"lc-ea01040b","gtin":null,"claim_key":"finding:keepa-exact-listing-history-review-count-history-not-available","primary_source":"keepa_history","claim":"Review-count history: not available","bucket":"unverified","looked":"LookCloser checked Keepa exact-listing history.","found":"Marketplace rating not shown★ — rating count unavailable. No exact-listing count history was available, so no review-pattern claim is made.","proof":{"detail":"Marketplace rating not shown★ — rating count unavailable. No exact-listing count history was available, so no review-pattern claim is made."},"source_refs":[{"source":"keepa_history","source_url":"https://keepa.com/#!product/1-B087Z1RSNY","observed_at":"2026-07-31","identity_basis":"exact_listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B087Z1RSNY","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:f917d61c1937f430cde70bb3f7b12ddec69f2b6c5625c726794ea1dc492f4228","evidence_url":"https://lookcloser.ai/e/ev-052873fd58c4"},{"evidence_id":"ev-9fd436a09229","record_id":"lc-ea01040b","gtin":null,"claim_key":"finding:nih-published-research-zinc-amount-in-daily-intake-context","primary_source":"nih_ods_zinc","claim":"Zinc amount, in daily-intake context","bucket":"unverified","looked":"LookCloser checked NIH / published research.","found":"label states 25 mg/serving — about 62% of the adult daily reference (adult RDA 8–11 mg; NIH sets 40 mg/day as the tolerable upper limit for adults). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate and gluconate labels may state compound mass rather than elemental zinc. Sources: NIH ODS — Zinc fact sheet, PubMed search: zinc supplementation trial.","proof":{"detail":"label states 25 mg/serving — about 62% of the adult daily reference (adult RDA 8–11 mg; NIH sets 40 mg/day as the tolerable upper limit for adults). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate and gluconate labels may state compound mass rather than elemental zinc. Sources: NIH ODS — Zinc fact sheet, PubMed search: zinc supplementation trial."},"source_refs":[{"source":"nih_ods_zinc","source_url":"https://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"zinc","receipt_label":"NIH ODS — Zinc fact sheet"},{"source":"pubmed_zinc","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=zinc+supplementation+randomized","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:12d00404dcbb68657bd71916aa48a7654c890149cba19b9a50ecea349cccd54e","evidence_url":"https://lookcloser.ai/e/ev-9fd436a09229"},{"evidence_id":"ev-ed785975cdeb","record_id":"lc-ea01040b","gtin":null,"claim_key":"finding:nih-published-research-research-context-is-available-for-the-listed-ingr","primary_source":"nih_ods_zinc","claim":"Research context is available for the listed ingredients","bucket":"unverified","looked":"LookCloser checked NIH / published research.","found":"Published sources describe how 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 — Zinc fact sheet, PubMed search: zinc supplementation trial.","proof":{"detail":"Published sources describe how 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 — Zinc fact sheet, PubMed search: zinc supplementation trial."},"source_refs":[{"source":"nih_ods_zinc","source_url":"https://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"zinc","receipt_label":"NIH ODS — Zinc fact sheet"},{"source":"pubmed_zinc","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=zinc+supplementation+randomized","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:9607d2f4e06e5c1b7bedf37065c2bc4c7f60af4e069f52faa33ed40dd578aae9","evidence_url":"https://lookcloser.ai/e/ev-ed785975cdeb"},{"evidence_id":"ev-f52f0e2b6ea4","record_id":"lc-ea01040b","gtin":null,"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-f52f0e2b6ea4"},{"evidence_id":"ev-c0bb91af6d32","record_id":"lc-ea01040b","gtin":null,"claim_key":"claim:efficacy","primary_source":"source_listing","claim":"“Quantum Nutrition Labs Liquid Zinc Supplement Drops - Zinc Sulfate Tincture for Adults, 25mg per Serving, Metabolic Function & Immune Support - 8…”","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 25 mg/serving — about 62% of the adult daily reference (adult RDA 8–11 mg; NIH sets 40 mg/day as the tolerable upper limit for adults). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate and gluconate labels may state compound mass rather than elemental zinc.","proof":{"kind":"efficacy","status":"partly","snippet":"Quantum Nutrition Labs Liquid Zinc Supplement Drops - Zinc Sulfate Tincture for Adults, 25mg per Serving, Metabolic Function & Immune Support - 8 Fl Oz Bottle…"},"source_refs":[{"source":"source_listing","source_url":"https://www.amazon.com/dp/B087Z1RSNY","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"nih_ods_zinc","source_url":"https://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient","registry_name":"NIH ODS","identifier":"zinc","receipt_label":"NIH ODS — Zinc fact sheet"},{"source":"pubmed_zinc","source_url":"https://pubmed.ncbi.nlm.nih.gov/?term=zinc+supplementation+randomized","observed_at":"2026-07-31","identity_basis":"named_ingredient","scope":"ingredient"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:86b7d4e3594a67cb417c348e427a575b3209ee797da3197e92c964f9cf603516","evidence_url":"https://lookcloser.ai/e/ev-c0bb91af6d32"},{"evidence_id":"ev-9e35e43f1643","record_id":"lc-ea01040b","gtin":null,"claim_key":"dose:zinc","primary_source":"facts_panel","claim":"“Zinc 25 mg per serving”","bucket":"checks_out","looked":"the listing dose against the exact same named panel subject","found":"The label promises 25 mg per serving. The panel says 25 mg. They match.","proof":{"subject":"zinc","listing_amount_mg":25,"panel_amount_mg":25,"panel_source":"listing_image","tolerance_mg":1},"source_refs":[{"source":"facts_panel","source_url":"https://www.amazon.com/dp/B087Z1RSNY","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"},{"source":"source_listing","source_url":"https://www.amazon.com/dp/B087Z1RSNY","observed_at":"2026-07-31","identity_basis":"listing_identifier","scope":"exact_listing"}],"observed_at":"2026-07-31","content_fingerprint":"sha256:6318d3a24401affe1792108f7dcf1ff83ecd89120ff4e235d494e451383118f2","evidence_url":"https://lookcloser.ai/e/ev-9e35e43f1643"}],"label_math":{"verdict":"UNKNOWN","claimed_subject":"zinc","claimed_mg":25,"serving_mass_mg":null,"percent_of_serving":null,"serving_mass_source":null,"ambiguity":null,"declared_actives_total_mg":null,"headline_claim_mg":25,"headline_subject":"zinc","subject_actual_mg":25},"listing_claims":{"dose_claims":[{"subject":"zinc","amount_mg":25,"basis":"per_serving"}],"testing":{"claimed":false,"named_lab_or_certifier":false},"container":{"units":null,"servings":null,"pack_count":1,"units_conflict":false},"marketing_text":["Preferred Liquid Form","Super Immune Support*","DIETARY SUPPLEMENT","Manufactured in a cGMP compliant facility for superior quality assurance","QNL's Quality Program. Manufactured to avoid added magnesium stearate (an undesirable excipient), artificial colors, art","We are proud to offer many OU Kosher Certified products.","Other Ingredients: Purified Water","Superior immune support*","Our liquid zinc is made using 100% purified water, not tap water which may contain impurities.","This product features a highly absorbable zinc."],"certification_text":["PURE VEGAN","PURITY VERIFIED","POTENCY VERIFIED","NON GMO","SOY FREE","U","OU Kosher Certified","cGMP"],"claim_checks":[{"kind":"efficacy","label":"Benefit claim","snippet":"Quantum Nutrition Labs Liquid Zinc Supplement Drops - Zinc Sulfate Tincture for Adults, 25mg per Serving, Metabolic Function & Immune Support - 8 Fl Oz Bottle…","looked":"whether the ingredient doses on the label match the doses used in published research","found":"Ingredient evidence exists; on dose: label states 25 mg/serving — about 62% of the adult daily reference (adult RDA 8–11 mg; NIH sets 40 mg/day as the tolerable upper limit for adults). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate and gluconate labels may state compound mass rather than elemental zinc.","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":4,"raw_reads":[{"img":0,"model":"claude-cli:subscription","text":"```json\n{\"brand\": \"Quantum Nutrition Labs\", \"product_name\": \"Quantum Zinc\", \"barcode\": null, \"panel\": false, \"serving_size_text\": null, \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": \"8 FL OZ (235 mL)\", \"net_weight_g\": null, \"unit_count_text\": null, \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"Preferred Liquid Form\", \"Super Immune Support*\", \"DIETARY SUPPLEMENT\"], \"certifications\": [\"PURE VEGAN\", \"PURITY VERIFIED\", \"POTENCY VERIFIED\", \"NON GMO\", \"SOY FREE\", \"U\"]}\n```\n"},{"img":1,"model":"claude-cli:subscription","text":"```json\n{\n  \"brand\": null,\n  \"product_name\": null,\n  \"barcode\": null,\n  \"panel\": true,\n  \"serving_size_text\": \"Serving Size 1 Teaspoon (5 mL)\",\n  \"serving_size_g\": null,\n  \"servings_per_container\": 47,\n  \"net_weight_text\": null,\n  \"net_weight_g\": null,\n  \"unit_count_text\": null,\n  \"responsible_parties\": [\n    {\n      \"role\": \"manufactured_for\",\n      \"name\": \"QUANTUM NUTRITION LABS, LP\",\n      \"address\": \"3500-B WADLEY PLACE, AUSTIN, TX 78728\",\n      \"verbatim\": \"MANUFACTURED IN THE U.S. FOR: QUANTUM NUTRITION LABS, LP 3500-B WADLEY PLACE, AUSTIN, TX 78728\"\n    }\n  ],\n  \"websites\": [],\n  \"actives\": [\n    {\"name\": \"Zinc (Zinc Sulfate Heptahydrate)\", \"amount\": \"25\", \"unit\": \"mg\"}\n  ],\n  \"label_claims\": [\n    \"Manufactured in a cGMP compliant facility for superior quality assurance\",\n    \"QNL's Quality Program. Manufactured to avoid added magnesium stearate (an undesirable excipient), artificial colors, artificial flavors, artificial preservatives.\",\n    \"We are proud to offer many OU Kosher Certified products.\",\n    \"Other Ingredients: Purified Water\"\n  ],\n  \"certifications\": [\n    \"PURE VEGAN\",\n    \"PURITY VERIFIED\",\n    \"POTENCY VERIFIED\",\n    \"NON GMO\",\n    \"SOY FREE\",\n    \"OU Kosher Certified\",\n    \"cGMP\"\n  ]\n}\n```\n"},{"img":2,"model":"claude-cli:subscription","text":"```json\n{\"brand\": null, \"product_name\": null, \"barcode\": null, \"panel\": false, \"serving_size_text\": \"1 teaspoon\", \"serving_size_g\": null, \"servings_per_container\": null, \"net_weight_text\": \"8 FL OZ\", \"net_weight_g\": null, \"unit_count_text\": null, \"responsible_parties\": [], \"websites\": [], \"actives\": [], \"label_claims\": [\"Superior immune support*\", \"Our liquid zinc is made using 100% purified water, not tap water which may contain impurities.\", \"This product features a highly absorbable zinc.\", \"Zinc is an essential mineral that plays many vital roles in the body.\", \"It promotes overall wellbeing, including supporting immune health, cognitive function, vision, and overall metabolism.*\", \"DIETARY SUPPLEMENT\"], \"certifications\": []}\n```\n"},{"img":3,"model":"claude-cli:subscription","text":"```json\n{\n  \"brand\": \"Quantum Nutrition Labs\",\n  \"product_name\": \"Quantum Zinc\",\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\": \"8 FL OZ (235 mL)\",\n  \"net_weight_g\": null,\n  \"unit_count_text\": null,\n  \"responsible_parties\": [],\n  \"websites\": [],\n  \"actives\": [],\n  \"label_claims\": [\n    \"Preferred Liquid Form\",\n    \"Super Immune Support\",\n    \"DIETARY SUPPLEMENT\",\n    \"SCAN TO DISCOVER MORE\"\n  ],\n  \"certifications\": [\n    \"PURE VEGAN\",\n    \"PURITY VERIFIED\",\n    \"POTENCY VERIFIED\",\n    \"NON GMO\",\n    \"SOY FREE\",\n    \"U\"\n  ]\n}\n```\n"}],"source_images":["https://m.media-amazon.com/images/I/711tIUhSQpL.jpg","https://m.media-amazon.com/images/I/71wc5fheQAL.jpg","https://m.media-amazon.com/images/I/71NDoNQV59L.jpg","https://m.media-amazon.com/images/I/51vkCN8x4QL.jpg"],"facts_panel_image":1,"brand":"Quantum Nutrition Labs","product_name":"Quantum Zinc","barcode":null,"barcode_identity_status":"unreadable_or_absent","serving_size_text":"Serving Size 1 Teaspoon (5 mL)","serving_size_g":null,"servings_per_container":47,"net_weight_text":"8 FL OZ (235 mL)","net_weight_g":null,"unit_count_text":null,"actives":[{"name":"Zinc (Zinc Sulfate Heptahydrate)","amount":"25","unit":"mg"}],"responsible_parties":[{"role":"manufactured_for","name":"QUANTUM NUTRITION LABS, LP","address":"3500-B WADLEY PLACE, AUSTIN, TX 78728","verbatim":"MANUFACTURED IN THE U.S. FOR: QUANTUM NUTRITION LABS, LP 3500-B WADLEY PLACE, AUSTIN, TX 78728"}],"websites":[],"label_claims":["Preferred Liquid Form","Super Immune Support*","DIETARY SUPPLEMENT","Manufactured in a cGMP compliant facility for superior quality assurance","QNL's Quality Program. 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