“Niacin 100 mg per serving”
Evidence →The label promises 100 mg per serving. The panel says 100 mg. They match.
Exact product checked · GTIN 00810014672212Nutricost · checked Sep 2, 2026 · on sale since Feb 17, 2021🇺🇸 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) 100mg, 240 Capsules
Checked against public sources between July 25 and September 2, 2026 · LookCloser does not sell or recommend supplements.
240capsules
240servings per container
Does the marketing hold up?
Reviews went from 110 to 327 between January 14 and August 21, 2026 — 54% of them arrived in a single month. A count that moves steadily is ordinary. A sudden burst is what deserves a closer look.
Is the dose real?✓Listing and panel agreeboth say 100 mg of Niacin
What a serving costs$0.05per 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
The label itself
What the Supplement Facts panel says
| Niacin (as nicotinic acid) | 100 mg |
|---|
Printed on the package: QUALITY nutricoST GUARANTEED · NON-GMO PRODUCT · GLUTEN-FREE PRODUCT · THIRD PARTY TESTED · GMP COMPLIANT FACILITY · VEGETARIAN PRODUCT · GMP COMPLIANT · GMP FACILITY
We read 1 lines from the package photograph. It is our transcript of the label, not the manufacturer’s panel, and it may be incomplete.
Marketing claims, checked
The checks, one by one
1 promise checks out. 2 could not be fully confirmed from public sources.
✓Matches the label1
◐Partly confirmed2
“On An Empty Stomach May Increase Flush Reaction 240 Capsules of immediate release Niacin Per Bottle Non-GMO, Gluten Free, 3rd Party Tested Made in…”
Evidence →A testing body is named on the listing, but we found no lot-specific certificate of analysis.
“On An Empty Stomach May Increase Flush Reaction 240 Capsules of immediate release Niacin Per Bottle Non-GMO, Gluten Free, 3rd Party Tested Made in…”
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.
Needs explanationCan you trust the review pattern?
Reviews went from 110 to 327 between January 14 and August 21, 2026 — 54% of them arrived in a single month.
A count that moves steadily is ordinary. A sudden burst is what deserves a closer look.
Evidence and sources
The dated series runs from 110 written reviews on January 14, 2026 to 327 on August 21, 2026. Up to 178 written reviews were added within a single ~30-day window — 54% of the total. Sudden bursts are the usual fingerprint of incentivized or bought reviews; a steady climb is not.
Locked evidence record →Open the full source-linked findingCheckedIs 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 100 mg; the photo-read Supplement Facts panel shows Niacin (as nicotinic acid) at 100 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 findingCheckedIs 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 findingWhat remains open 2
- We have not found a public label filing for this exact product.
- Barcode checksum is valid; no independent product record was found.
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$11.99
$0.05 per labeled serving
matching UPC/GTIN · checked Sep 2, 2026
View on Amazon ↗iHerb
Exact UPC/GTIN match$11.99
$0.05 per labeled serving
matching UPC/GTIN · checked Jul 25, 2026
View on iHerb ↗Target
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search Target ↗Walmart
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search Walmart ↗Same UPC/GTIN observed across 2 sellers at the same price 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 September 03, 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.