“Magnesium 450 mg per serving”
Evidence →The label promises 450 mg per serving. The panel says 450 mg. They match.
Exact product checked · GTIN 00714983338011NaturaLife Labs · checked Jul 31, 2026 · on sale since Sep 23, 2016🇺🇸 USPTO wordmark owner · NaturaLife Labs, Inc · California, USAPackage says distributed by: NaturaLife Labs, Inc. · 21515 Hawthorne Blvd, Suite 200 Torrance CA 90503
Quick read · NaturaLife Labs
NaturaLife Labs Magnesium Glycinate
Checked against public sources on July 31, 2026 · LookCloser does not sell or recommend supplements.
120capsules · 40 servings
Does the marketing hold up?
Magnesium: 450 mg on the label; adult upper limit 350 mg. This serving is about 1.3× the adult upper limit shown by NIH. The limit applies to SUPPLEMENTAL magnesium only (not from food).
Is the dose real?✓Listing and panel agreeboth say 450 mg of Magnesium
What a serving costs$0.40per serving, at the checked price
Is it tested?Claimed — no lab or certificate found
Who’s behind it?🇺🇸NaturaLife Labs, Inccorporation · California, 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.
1✓ checked out1◖ partly confirmed2? couldn’t verifyno contradictions · no recalls
The label itself
What the Supplement Facts panel says
| Magnesium (as Magnesium Glycinate) | 450 mg |
|---|
Printed on the package: Gluten Free · PREMIUM · MFD IN THE USA · Vegan · Allergen Free · THIRD PARTY TESTED · NON-GMO · MADE WITH NON-GMO INGREDIENTS
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. 3 could not be fully confirmed from public sources.
✓Matches the label1
◐Partly confirmed1
“in the USA in a GMP Facility – Produced in the United States in a facility that follows Good Manufacturing Practices (GMP) standards for 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.
Ingredient research can support context, but it is not a trial of this exact product.
?Couldn’t verify independently2
“PARTY”
Evidence →No named laboratory or lot-specific certificate was found for this exact product. A related brand page repeats a testing claim but names no issuer; its UPC is not published. NSF, IFOS, USP, and Informed-Sport were not checked in this record. This is a public-evidence limit, not a finding that testing did not occur.
“in the USA in a GMP Facility – Produced in the United States in a facility that follows Good Manufacturing Practices (GMP) standards for quality and”
Evidence →“Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product.
We looked and found no public proof. That does not count against the product.
Quick read · 6 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Needs explanationIs the label honest?
Magnesium: 450 mg on the label; adult upper limit 350 mg.
This serving is about 1.3× the adult upper limit shown by NIH. The limit applies to SUPPLEMENTAL magnesium only (not from food).
Evidence and sources
The panel lists 450 mg magnesium. NIH gives 350 mg as the adult Tolerable Upper Intake Level for SUPPLEMENTAL magnesium only (not from food). That is about 1.3 times the limit.
NIH ODS — Magnesium fact sheetupper-limit and Daily Value contextNIH ODS — Magnesium fact sheetmagnesium context · not product evidencePubMed search: magnesium glycinate supplementationmagnesium context · not product evidence
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 450 mg; the photo-read Supplement Facts panel shows Magnesium (as Magnesium Glycinate) at 450 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 findingCheckedWho is behind it?
The barcode identity checks out · 714983338011.
The barcode matches, so we are checking the right product rather than a look-alike.
Evidence and sources
UPCitemdb resolves 714983338011 to "Magnesium Glycinate 450 MG No Laxative Effect - Vegan - Helps Function of Muscle" (NaturaLife Labs) — consistent with this listing.
Locked evidence record →Open the full source-linked findingCheckedWho is behind it?
Registered in NIH's supplement label database (DSLD)
A government label filing makes the listed formula easier to inspect and compare over time.
Evidence and sources
Label #255454 “Magnesium Glycinate 450 mg” (NaturaLife Labs), entered 2021-09-24, with the full Supplement Facts on file. Company on file: Distributor — NaturaLife Labs, Inc, Torrance, CA.
Locked evidence record →Open the full source-linked findingPublic contextWill you get what you pay for?
Reaching a studied dose costs about $12/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 $12 per month. A price observation, not a recommendation.
Locked evidence record →Open the full source-linked findingWhat remains open 1
- No FDA recall matched this brand in the current search.
These are evidence gaps, not strikes against the product.
Who owns the brand wordmark?
🇺🇸
NaturaLife Labs, IncCorporation · exact supplement-class mark for NATURALIFE LABS
Filed address
21515 Hawthorne Blvd suite 200, Torrance, California 90503, 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
450 mg per serving — above 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 450 mg of magnesium per serving. Studies we found used 200 mg–420 mg a day, so this sits above 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$15.95
$0.40 per labeled serving
matching UPC/GTIN · checked Aug 1, 2026
View on Amazon ↗Brand website
Official product-page candidate · UPC absent$15.95
Official shopping lead; excluded from exact price comparisons.
Magnesium Glycinate 450 mg - 120 Vegan Capsules · Default Title. Confirm the package UPC/GTIN before buying.
Check brand website ↗iHerb
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 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 ↗Only one exact price was available at build time; prices change by date, seller, and promotion.
The brand-page price is shown as a shopping lead only. It is excluded from the exact-product price difference because the page does not publish this record's matching UPC/GTIN.
The observed listing and related brand page repeat 450 mg. 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 August 02, 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.