“Manufactured in an NSF certified GMP compliant facility, Nutricost prioritizes”
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.
Exact product checked · GTIN 00810139571391Nutricost · checked Jul 25, 2026🇺🇸 USPTO wordmark owner · eSupplements, LLC · UTAH, USAPackage says manufactured for: nutricost · 351 E 1750 N, Vineyard, UT 84059
Quick read · Nutricost
Nutricost Magnesium Glycinate 210MG
Checked against public sources on July 25, 2026 · LookCloser does not sell or recommend supplements.
180capsules · 60 servings
Does the marketing hold up?
The barcode identity checks out · 810139571391. The barcode matches, so we are checking the right product rather than a look-alike.
Is the dose real?✓Panel read — 1 ingredient listed
What a serving costs$0.25per 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?✓No recalls found
“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.
2◖ partly confirmedno contradictions · no recalls
Marketing claims, checked
The checks, one by one
The public sources did not settle the marketing promises on this label.
◐Partly confirmed2
“standards from production to packaging Third-Party Tested: To further guarantee the integrity of”
Evidence →A testing body is named on the brand page (NSF), but we found no lot-specific certificate of analysis.
Ingredient research can support context, but it is not a trial of this exact product.
Quick read · 2 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Checks outWho is behind it?
The barcode identity checks out · 810139571391.
The barcode matches, so we are checking the right product rather than a look-alike.
Evidence and sources
The brand's store lists this exact barcode as “Nutricost Magnesium Glycinate 210MG” (variant: 180 Capsules) — identity confirmed across retailer listings.
Locked evidence record →Open the full source-linked findingChecks outCan you trust the review pattern?
Reviews grew steadily — about 106 between January 29, 2026 to July 14, 2026, with no sudden spike.
Gradual growth is more ordinary. A sudden burst deserves a closer look.
Evidence and sources
Written reviews grew from 168 to 268 across 2026-02-08 – 2026-07-14 with no single manufactured spike (largest 30-day gain ~29).
Locked evidence record →Open the full source-linked findingWhat remains open 2
- Panel amounts still need a clearer source image.
- 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 ↗
Research behind the findings
Dose and research context
The label amount is shown beside the ranges used in the linked ingredient studies.
Dose vs research
The Active Ingredient
STUDIED RANGE0525 mg
210 mg per serving — within the 200–420 mg/day used in the linked studies.
Linked ingredient research · label amount, not a recommendation
Where it sells
Price check for this exact product
Amazon
Exact UPC/GTIN match$14.95
$0.25 per labeled serving
matching UPC/GTIN · checked Jul 25, 2026
View on Amazon ↗Brand website
Exact UPC/GTIN match$16.97
$0.28 per labeled serving
matching UPC/GTIN · checked Jul 25, 2026
View on Brand website ↗iHerb
Exact UPC/GTIN match$21.27
$0.35 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 3 sellers. Amazon was lowest at $14.95; iHerb was highest at $21.27 — a $6.32 range at check time.
The observed listing and exact brand page repeat 180 capsules, 210 mg, 90 capsules, 360 capsules. That confirms cross-page consistency of the published claim, not the product contents.
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.