Checked against public sources on August 3, 2026 · LookCloser does not sell or recommend supplements.
Does the marketing hold up?
FDA recall appears in this brand's history. An exact-product recall is a direct signal. A different product from the same firm is company context, not a strike against this item.
“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.
| Magnesium (as Magnesium Glycinate) | 240 mg |
|---|
Printed on the package: Non-GMO
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.
1 promise needs a closer look.
Published research exists for ingredients in this formula. Whether this product’s doses match those studies could not be confirmed.
Ingredient research can support context, but it is not a trial of this exact product.
We found no study of this product measuring the stated outcome over the stated timeframe.
Headlines first. Open evidence only when you want the source trail.
An exact-product recall is a direct signal. A different product from the same firm is company context, not a strike against this item.
This recall is not about the product on this page. Natrol, LLC recalled a different product on April 8, 2021. FDA has since closed that case. The recalled item was “Natrol Melatonin 3 mg, Tab 60 White bottle with purple flip-top cap.…”
Locked evidence record →Open the full source-linked findingThe public ownership record is ambiguous. We show the exact candidates instead of choosing one by name similarity.
USPTO returned multiple live supplement-class records for the exact brand wordmark: NATROL, INC., Natrol, Inc., Natrol LLC. These records answer who owns registrations for the brand; the separate product-to-owner or manufacturer link remains open.
Locked evidence record →Open the full source-linked findingEvery ingredient shows its real amount — nothing is hidden in a proprietary blend.
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 findingThe barcode matches, so we are checking the right product rather than a look-alike.
The brand's store lists this exact barcode as “High Absorption Magnesium Glycinate, 240mg” (variant: Default Title) — identity confirmed across retailer listings.
Locked evidence record →Open the full source-linked findingA count that moves steadily is ordinary. A sudden burst is what deserves a closer look.
Written reviews rose from 84 to 144 between August 26, 2025 and July 27, 2026. The largest rise inside any single 30-day window was about 38, so the count moved in steps rather than in one burst.
Locked evidence record →Open the full source-linked findingThese are evidence gaps, not strikes against the product.
These are the USPTO records behind the brand name. We show them all rather than choosing one by similarity.
CALIFORNIA, USA; DELAWARE, USA · Registration 1532608
21411 Prairie Street, CHATSWORTH, CALIFORNIA 91311, UNITED STATES
IC 005: FOOD SUPPLEMENTS, NAMELY SUPPLEMENTS COMPRISING IN WHOLE OR PART MINERALS, VITAMINS, GREEN FOOD, FIBERS AND HERBS.
DELAWARE, USA · Registration 2906488
21411 Prairie Street, Chatsworth, CALIFORNIA 91311, UNITED STATES
IC 005: full line of dietary supplements.
DELAWARE, USA · Registration 5643583
21411 Prairie Street, Chats, California 91311, UNITED STATES
IC 005: Dietary and nutritional supplements; Vitamins.
Delaware, USA · Registration 8235633
21411 Prairie Street, Chatsworth, California 91311, UNITED STATES
IC 005: Vitamins; Dietary and nutritional supplements.
This answers who owns registrations for the brand wordmark. It does not by itself prove which entity made, imported, or sold this specific product. Open USPTO source ↗
We could not match an amount on this product to a studied range for the same ingredient, so these links are ingredient background rather than a measurement of this product.
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 240 mg of magnesium per serving. Studies we found used 200 mg–420 mg a day, so this sits inside that range.
Study ranges differ between trials and change as research changes. This is background reading, not a pass, a failure, or a recommendation.
$0.38 per labeled serving
matching UPC/GTIN · checked Aug 3, 2026
View on Amazon ↗We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search iHerb ↗We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search Target ↗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 observed listing and exact brand page repeat 240 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.
The full report shows every source, the exact unresolved question, and the documentation that would settle it.
Record built August 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.