“Magnesium 210 mg per serving”
Evidence →The label promises 210 mg per serving. The panel says 210 mg. They match.
Exact product checked · GTIN 00810139571407Nutricost · checked Jul 24, 2026 · on sale since Feb 5, 2024🇺🇸 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 between July 24 and September 1, 2026 · LookCloser does not sell or recommend supplements.
360capsules · 120 servings
Does the marketing hold up?
Package and trademark records name different responsible entities. The package says manufactured for: nutricost, 351 E 1750 N, Vineyard, UT 84059. USPTO names eSupplements, LLC as the exact wordmark owner. That can be a normal distributor, manufacturer, or licensing…
Is the dose real?✓Listing and panel agreeboth say 210 mg of Magnesium
What a serving costs$0.18per 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
| Magnesium | 210 mg |
|---|---|
| (as magnesium bisglycinate) | 50 % |
Printed on the package: NON-GMO · GMO · GLUTEN-FREE · VEGETARIAN · GMP · GMP COMPLIANT FACILITY · Vegan · NON-GMO PROJECT VERIFIED
We read 2 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
“Quality Assurance: Manufactured in an NSF certified GMP compliant facility, Nutricost prioritizes product quality and”
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.
“Tested: To further guarantee the integrity of each batch, Nutricost Magnesium Glycinate Capsules undergo thorough third-party”
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 · 5 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
CheckedIs 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 210 mg; the photo-read Supplement Facts panel shows Magnesium at 210 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 · 2 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 findingCheckedWho is behind it?
The barcode identity checks out · 810139571407.
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: 360 Capsules) — identity confirmed across retailer listings.
Locked evidence record →Open the full source-linked findingPublic contextWill you get what you pay for?
Reaching a studied dose costs about $5/month
Comparing cost at a research-relevant amount shows how quickly the package is used and what the routine actually costs.
Evidence and sources
At 1.0 serving(s) a day to reach the low end of the studied range (200–420 mg), this product runs roughly $5 per month. A price observation, not a recommendation.
Locked evidence record →Open the full source-linked findingCheckedCan you trust the review pattern?
Reviews rose from 36 to 109 between September 2, 2025 and August 27, 2026 — no sudden jump.
A count that moves steadily is ordinary. A sudden burst is what deserves a closer look.
Evidence and sources
Written reviews rose from 36 to 109 between September 2, 2025 and August 27, 2026. The largest rise inside any single 30-day window was about 11, so the count moved in steps rather than in one burst.
Locked evidence record →Open the full source-linked findingWhat remains open 1
- We have not found a public label filing for this exact product.
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 range used in the linked ingredient studies.
Dose vs research
Magnesium
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
Background reading
What the research says about these amounts
Not a score. Studies disagree with each other and change over time, so this sits beside the evidence rather than counting toward it — it is here so you can read the sources yourself.
The panel lists 210 mg of magnesium per serving. Studies we found used 200 mg–420 mg a day, so this sits inside that range.
0studied 200 mg–420 mg
Study ranges differ between trials and change as research changes. This is background reading, not a pass, a failure, or a recommendation.
Where it sells
Price check for this exact product
Amazon
Exact UPC/GTIN match$21.95
$0.18 per labeled serving
matching UPC/GTIN · checked Aug 29, 2026
View on Amazon ↗Brand website
Exact UPC/GTIN match$24.97
$0.21 per labeled serving
matching UPC/GTIN · checked Jul 24, 2026
View on Brand website ↗iHerb
Exact UPC/GTIN match$34.66
$0.29 per labeled serving
matching UPC/GTIN · checked Jul 24, 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 3 sellers. Amazon was lowest at $21.95; iHerb was highest at $34.66 — a $12.71 range at check time.
The observed listing and exact brand page repeat 210 mg, 360 capsules, 90 capsules, 180 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 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.