“Jarrow Magnesium Glycinate, Support Relaxation & Healthy Sleep, 90”
Evidence →Published research exists for ingredients in this formula. Whether this product’s doses match those studies could not be confirmed.
Exact product checked · GTIN 00790011291138Jarrow Formulas · checked Jul 31, 2026 · on sale since Sep 13, 2024🇺🇸 USPTO wordmark owner · Jarrow Formulas, Inc. · CALIFORNIA, USAPackage says distributed by: Jarrow Formulas, Inc. · Sherman Oaks, CA 91403, USA
Quick read · Jarrow Formulas
Jarrow Formulas Magnesium Glycinate
Checked against public sources on July 31, 2026 · LookCloser does not sell or recommend supplements.
90capsules · 30 servings
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.
Is the dose real?Panel read — dose not verified1 ingredient listed; no advertised amount we could confirm against them
What a serving costs$0.76per serving, at the checked price
Is it tested?No testing claim made
Who’s behind it?🇺🇸Jarrow Formulas, Inc.corporation · CALIFORNIA, USA
Is it the real thing?✓Barcode matches outside records
Trouble on record?Brand history — not this 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◖ partly confirmedno contradictions · brand-level recall on file
The label itself
What the Supplement Facts panel says
| Magnesium (as Magnesium Glycinate) | 360 mg |
|---|
Printed on the package: vegan · non-gmo · NON GMO Project VERIFIED
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
The public sources did not settle the marketing promises on this label.
◐Partly confirmed1
Ingredient research can support context, but it is not a trial of this exact product.
Quick read · 4 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Needs explanationAny trouble in public records?
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.
Evidence and sources
This recall is not about the product on this page. Jarrow Formulas Inc recalled a different product on January 15, 2018. FDA has since closed that case. The recalled item was “Jarrow Formulas Liquid L-Carnitine; 16 fl oz.…”
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 · 790011291138.
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 “Magnesium Glycinate” (variant: Default Title) — identity confirmed across retailer listings.
Locked evidence record →Open the full source-linked findingCheckedCan you trust the review pattern?
Reviews rose from 62 to 83 between January 28 and July 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 62 to 83 between January 28 and July 27, 2026. The largest rise inside any single 30-day window was about 5, so the count moved in steps rather than in one burst.
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?
🇺🇸
Jarrow Formulas, Inc.Corporation · exact supplement-class mark for JARROW FORMULAS
Filed address
21411 Prairie Street, Chatsworth, California 91311, 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
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.
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 360 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$22.94
$0.76 per labeled serving
matching UPC/GTIN · checked Jul 31, 2026
View on Amazon ↗Brand website
Exact UPC/GTIN match$24.99
$0.83 per labeled serving
matching UPC/GTIN · checked Jul 31, 2026
View on 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 ↗Same UPC/GTIN observed across 2 sellers. Amazon was lowest at $22.94; Brand website was highest at $24.99 — a $2.05 range at check time.
Reference prices only · no affiliate links · every compared seller must publish the matching UPC/GTIN.
Want to inspect the evidence?
The full report shows every source, the exact unresolved question, and the documentation that would settle it.
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.