“Niacin 500 mg per serving”
Evidence →The label promises 500 mg per serving. The panel says 500 mg. They match.
Exact product checked · GTIN 00810014679440Nutricost · checked Jul 25, 2026 · on sale since Jul 15, 2016🇺🇸 USPTO wordmark owner · eSupplements, LLC · UTAH, USAPackage says manufactured for: nutricost · 351 E 1750 N, Vineyard, UT 84059
Quick read · Nutricost
Nutricost Niacin (Vitamin B3) 500mg, 240 Capsules
Checked against public sources on July 25, 2026 · LookCloser does not sell or recommend supplements.
240capsules
240servings per container
Does the marketing hold up?
Listing claim matches the Supplement Facts panel The label promise and the Supplement Facts amount agree.
Is the dose real?✓Panel read — 1 ingredient listed
What a serving costs$0.06per serving, at the checked price
Is it tested?Claimed — not yet checked
Who’s behind it?🇺🇸eSupplements, LLClimited liability company · UTAH, USA
Is it the real thing?✓Barcode matches outside records
Trouble on record?Recall check not run yeta gap in our records, not a finding about the product
“Couldn’t verify” means we looked and found no public proof — not a mark against the product. Most supplement claims cannot be independently verified by anyone, so grey is the normal state of this industry.
1✓ checked out2◖ partly confirmedno contradictions · no recalls
Marketing claims, checked
The checks, one by one
1 promise checks out. 2 could not be fully confirmed from public sources.
✓Checks out1
◐Partly confirmed2
“Niacin Per Bottle Non-GMO, Gluten Free, 3rd Party Tested Manufactured in an NSF Certified, GMP”
Evidence →A testing body is named on the listing, but we found no lot-specific certificate of analysis.
“Tested Manufactured in an NSF Certified, GMP Compliant, FDA Registered Facility DIETARY”
Evidence →“GMP-certified” describes factory processes, not what is in the bottle. The claim does not name a certifier or public register that a shopper can check.
Ingredient research can support context, but it is not a trial of this exact product.
Quick read · 3 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Checks outIs the label honest?
Listing claim matches the Supplement Facts panel
The label promise and the Supplement Facts amount agree.
Evidence and sources
The listing claims 500 mg; the photo-read Supplement Facts panel shows Niacin (as nicotinic acid) at 500 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.
Locked evidence record →Open the full source-linked findingChecks outIs the label honest?
Every ingredient shows its amount · 1 ingredients listed.
Every ingredient shows its real amount — nothing is hidden in a proprietary blend.
Evidence and sources
The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.
Locked evidence record →Open the full source-linked findingChecks outCan you trust the review pattern?
Reviews grew steadily — about 56 between January 28, 2026 to July 13, 2026, with no sudden spike.
Gradual growth is more ordinary. A sudden burst deserves a closer look.
Evidence and sources
Written reviews grew from 1436 to 1489 across 2026-02-08 – 2026-07-13 with no single manufactured spike (largest 30-day gain ~13).
Locked evidence record →Open the full source-linked findingWhat remains open 1
- No matched to this exact product public label filing is saved in this record.
These are evidence gaps, not strikes against the product.
Who owns the brand wordmark?
🇺🇸
eSupplements, LLCLimited Liability Company · exact supplement-class mark for NUTRICOST
Filed address
UTAH, USA) DBA Nutricost; 351 E 1750 N, VINEYARD, UTAH 84059, UNITED STATES
USPTO identifies the public owner or applicant behind this brand wordmark. This does not by itself identify the product manufacturer or prove where the product was made. Open USPTO source ↗
Where it sells
Price check for this exact product
Amazon
Exact UPC/GTIN match$14.94
$0.06 per labeled serving
matching UPC/GTIN · checked Jul 26, 2026
View on Amazon ↗iHerb
Exact UPC/GTIN match$14.95
$0.06 per labeled serving
matching UPC/GTIN · checked Jul 25, 2026
View on iHerb ↗Target
Not confirmedNo exact listing saved
Search results remain not linked to this exact product until this retailer publishes the matching UPC/GTIN.
Search Target ↗Walmart
Not confirmedNo exact listing saved
Search results remain not linked to this exact product until this retailer publishes the matching UPC/GTIN.
Search Walmart ↗Same UPC/GTIN observed across 2 sellers. Amazon was lowest at $14.94; iHerb was highest at $14.95 — a $0.01 range at check time.
Reference prices only · no affiliate links · every compared seller must publish the matching UPC/GTIN.
Want the complete evidence trail?
The summary stops at product-specific facts. The full report preserves every source, calculation, limitation, and unresolved check for review or sharing.
Record built July 25, 2026. Sources: source listing observed at check time · USPTO Trademark Search · Keepa exact-listing history · NIH / published research · certification and regulator records where available. LookCloser publishes evidence and gaps; it does not advise for or against any supplement. Evidence-based corrections welcome.