“Magnesium 500 mg per serving”
Evidence →The label promises 500 mg per serving. The panel says 90 mg. Because this panel was read from an image, confirm the physical label before treating the difference as settled.
Exact product checked · GTIN 00850018274883Nobi Nutrition · checked Jul 24, 2026🇺🇸 USPTO wordmark owner · Nobi Nutrition LLC · DELAWARE, USAPackage says manufactured for: Nobi Nutrition, LLC · 239 2nd Ave. S, 2nd Floor,
St. Petersburg, FL 33701
Quick read · Nobi Nutrition
Nobi Nutrition Magnesium Glycinate 500mg
Checked against public sources on July 25, 2026 · LookCloser does not sell or recommend supplements.
120capsules · 60 servings
Does the marketing hold up?
The listing and exact brand page both say it is tested, but neither names the lab. The exact brand page repeats the marketing claim, but repetition is not independent testing evidence. A named issuer and lot-specific report would make it checkable.
Is the dose real?!Label says 500 mg · panel says 90 mg
What a serving costs$0.28per serving, at the checked price
Is it tested?Claimed — no lab or certificate found
Who’s behind it?🇺🇸Nobi Nutrition LLClimited liability company · DELAWARE, 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.
3◖ partly confirmed1? couldn’t verifyno contradictions · no recalls
Marketing claims, checked
The checks, one by one
The public sources did not settle the marketing promises on this label.
◐Partly confirmed3
“Muscle, Bone, Heart Health & Relaxation Support for Women & Men | Chelated Mag Glycinate |”
Evidence →Ingredient evidence exists; on dose: label states 500 mg/serving — about 119% of the adult daily reference (adult RDA 310–420 mg elemental; NIH sets 350 mg/day as the supplemental upper level for elemental magnesium). A single serving isn’t meant to supply a full day, so this is context, not a shortfall. Caveat: chelate labels (glycinate, citrate) often state compound mass, which reads ~5–7× higher than elemental magnesium — the Supplement Facts panel settles which is meant.
“Non-GMO, and manufactured in a GMP-Certified facility. MAXIMUM ABSORPTION”
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 independently1
“Magnesium delivers the support you need.* THIRD-PARTY TESTED: Nobi Nutrition’s Magnesium sleep”
Evidence →No named laboratory or lot-specific certificate was found for this exact product. The exact brand page repeats a testing claim but names no issuer. 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.
We looked and found no public proof. That does not count against the product.
Quick read · 4 useful findings
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Checks outIs 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 findingChecks outWho is behind it?
The barcode identity checks out · 850018274883.
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 500mg” (variant: Default Title) — 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 $8/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 $8 per month. A price observation, not a recommendation.
Locked evidence record →Open the full source-linked findingChecks outCan you trust the review pattern?
Reviews grew steadily — about 338 between January 31, 2026 to July 16, 2026, with no sudden spike.
Gradual growth is more ordinary. A sudden burst deserves a closer look.
Evidence and sources
Written reviews grew from 681 to 1003 across 2026-02-15 – 2026-07-16 with no single manufactured spike (largest 30-day gain ~81).
Locked evidence record →Open the full source-linked findingWhat remains open 1
- 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?
🇺🇸
Nobi Nutrition LLCLimited Liability Company · exact supplement-class mark for NOBI NUTRITION
Filed address
6800 Long Leaf Drive, Parkland, Florida 33076, 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
Magnesium
STUDIED RANGE0525 mg
90 mg per serving — below 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 90 mg of magnesium per serving. Studies we found used 200 mg–420 mg a day, so this sits below 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$16.95
$0.28 per labeled serving
matching UPC/GTIN · checked Jul 25, 2026
View on Amazon ↗iHerb
Exact UPC/GTIN match$16.99
$0.28 per labeled serving
matching UPC/GTIN · checked Jul 24, 2026
View on iHerb ↗Brand website
Exact UPC/GTIN match$17.78
$0.30 per labeled serving
matching UPC/GTIN · checked Jul 24, 2026
View on Brand website ↗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 $16.95; Brand website was highest at $17.78 — a $0.83 range at check time.
The observed listing and exact brand page repeat 500 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 to inspect the evidence?
The full report shows every source, the exact unresolved question, and the documentation that would settle it.
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.