Full record · 810014675350 · back to the summary
Nutricost N-Acetyl L-Cysteine (NAC) 600mg, 180 Capsules
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How to read this report
What this is. We compare what a listing claims against what public records show — label arithmetic, barcode registries, NIH’s label catalog, FDA enforcement data, certification registries, and published research. Every statement below traces to one of those.
What the states mean. Confirmed = an outside source agrees. Contradicted = an outside source disagrees. Caution = something needs explaining. No data = we looked and found nothing — a gap, not a strike.
What it is not. A clean record is not an endorsement and never proof a product works. A thin record is not an accusation. We publish evidence and gaps; the conclusion is yours. Nothing here is medical advice.
Something wrong? Every figure is meant to be checkable — sources are named and linked. Send a correction and we’ll fix the record.
What the label discloses
The listing-image panel publishes an amount for each of its 1 declared row. That supports ingredient-by-ingredient review; it does not verify the contents.
| Panel row | Amount | %DV | What to notice |
|---|---|---|---|
| N-Acetyl L-Cysteine (NAC)(vegan) | 600 mg | — |
FDA rules (21 CFR 101.36) require the amount of each dietary ingredient per serving unless hidden in a declared “proprietary blend” (legal, but a transparency yellow flag). A label stating no amount at all is non-compliant — a checkable red flag. This panel states amounts; the open question is whether those declared amounts are independently verified and how they compare with relevant research.
vision:google/gemini-flash-1.5 Amounts are shown as declared panel data, not independently lab-tested contents.
Every check we ran
Each ingredient’s amount is disclosed
The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.
Exact trademark owner identified
USPTO lists eSupplements, LLC (LIMITED LIABILITY COMPANY) in UTAH, 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.
UPC independently corroborated
Open Food Facts resolves 810014675350 to "NAC" (Nutricost) — consistent with this listing.
Testing claim names a recognized certifier
A named certifier/laboratory appears in the listing (registry cross-check pending).
No data yet: Label math could not be verified
The retained listing evidence does not establish net weight, per-serving dose, servings per container, so the dose claim cannot yet be checked against serving arithmetic. This is a neutral evidence gap, not a pass or strike.
Not found in NIH's DSLD label registry
The NIH Dietary Supplement Label Database has no matching label yet. Ingestion lags the market — recorded as a gap, not a strike.
180-day review-count history is on file
Exact-listing history records written-review counts from 889 on 2026-01-29 to 1,011 on 2026-07-19 (net +122). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic.
This item belongs to a catalog variation family
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.
What the listing promises — claim by claim
Why is this shown?
| Claim | Status | What we found |
|---|---|---|
| Quality-testing claim “…fied, GMP Compliant FDA, Registered Facility 3rd Party Tested By Independent, ISO-Accredited Laboratories…” | Partly supported We looked for: a named laboratory, a certificate of analysis, or a certification-registry entry | A testing body is named on the listing, but no lot-specific certificate of analysis was located. |
| Manufacturing claim “…n-GMO & Gluten Free Made In a NSF Certified, GMP Compliant FDA, Registered Facility 3rd Party…” | Claimed, not verifiable We looked for: the facility registration or certificate behind the claim | Facility-level claims can be accurate and still say nothing about this product’s contents. No registration document was located. |
“No evidence located” does not mean a claim is false — it means the seller has not put evidence proportionate to the claim on the public record, and we could not find any. Absence of proof is not proof of absence.
Verifiability profile — 4 of 6 public signals
What this listing gives the public to check. Publishing these signals doesn't prove quality — but withholding them means claims can only be taken on faith.
Identity
| UPC (barcode) — also our record ID | 810014675350 |
| Brand | Nutricost |
| Source listing identifier | B01CUQFKW4 |
| USPTO brand owner | eSupplements, LLC · LIMITED LIABILITY COMPANY · UTAH, USA |
| Owner filed address | UTAH, USA) DBA Nutricost; 351 E 1750 N, VINEYARD, UTAH 84059, UNITED STATES |
From the label (photo-read)
| Serving size | 1 Capsule |
| Servings per container | 180 |
| Pack statement | 180 CAPSULES |
| Badges printed on pack | QUALITY GUARANTEED, VEGAN, vegan, GMP, Vegan PRODUCT, GMP COMPLIANT FACILITY, NON-GMO PRODUCT, ANIMAL-FREE |
Supplement Facts panel (photo-read):
| Ingredient | Amount per serving | Reading confidence |
|---|---|---|
| N-Acetyl L-Cysteine (NAC)(vegan) | 600 mg | High clearly legible in the photo |
Claims printed on the packaging:
“Vegan” · “quality” · “NON-GMO” · “GLUTEN-FREE” · “VEGETARIAN” · “GMP COMPLIANT” · “THIRD PARTY TESTED” · “MADE AND QUALITY TESTED IN THE USA WITH GLOBALLY SOURCED INGREDIENTS.”
Read by a vision model from 8 listing photos — verbatim extraction; OCR errors possible. Spot a mistake? It will be corrected on review.
Where it sells
A brand storefront was found, but no exact-product price was published or identity-bound at build time.
Brand store nutricost.com: 199 supplement products (+51 merch items) — for comparison, single-focus brands typically carry 5–30 products; very broad catalogs are common among companies that rebrand ready-made formulas — a pattern note, not a verdict.
Reference links for identification only — LookCloser has no affiliate relationships and earns nothing from any link on this page.
Ingredient science
No knowledge-base entry yet for this formula's active ingredients — entries are added as the KB grows. Absence of a science card is a coverage gap, not a judgment.
Record 810014675350 · built July 22, 2026 · lookcloser.ai · corrections@lookcloser.ai