Barcode confirmed in an outside database
UPCitemdb resolves 748927821710 to "Optimum Nutrition Zinc Magnesium Aspartate Zinc for Immune Support Muscle Reco" (Optimum Nutrition) — consistent with this listing.
Full record · 748927821710 · back to the summary
Optimum Nutrition Zinc and Magnesium Aspartate Recovery Supplement
Exact product checkedGTIN 00748927821710 · checked 2026-07-26
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How to read this report
What this is. We compare what a listing claims against what public records show — label arithmetic, barcode registries, NIH’s label catalog, FDA enforcement data, certification registries, and published research. Every statement below traces to one of those.
What the states mean. Confirmed = an outside source agrees. Contradicted = an outside source disagrees. Caution = something needs explaining. No data = we looked and found nothing — a gap, not a strike.
What it is not. A clean record is not an endorsement and never proof a product works. A thin record is not an accusation. We publish evidence and gaps; the conclusion is yours. Nothing here is medical advice.
Something wrong? Every figure is meant to be checkable — sources are named and linked. Send a correction and we’ll fix the record.
Every check we ran
Confirmed evidence
What checked out2
These checks found support in the public record. They confirm specific facts, not the product as a whole.
Confirmed
The review count moved gradually, not in one burst
Written reviews fell from 1,677 to 1,673 between April 21 and July 19, 2026. No single 30-day window in the dated series shows a rise.
Documented concerns
What needs caution0
These are documented contradictions or claims that need more evidence. They are separate from missing data.
No contradictions or product-specific cautions were found at this check depth.
Unresolved public record
What is still missing7
We looked for these signals but could not settle them from public sources. A gap is not a strike.
Multiple USPTO brand-owner records are shown
USPTO returned multiple live supplement-class records for the exact brand wordmark: GLANBIA PERFORMANCE NUTRITION LIMITED, Glanbia Nutritionals (Ireland) Limited (limited company (ltd.); IRELAND). These records answer who owns registrations for the brand; the separate product-to-owner or manufacturer link remains open.
Panel amounts are awaiting a clearer image read
The current image extraction saved 3 ingredient name(s) but no usable amounts. This is a LookCloser processing gap, not evidence that the brand withheld the numbers; dose arithmetic is withheld until the panel is re-read.
Research context is available for the listed ingredients
Published sources describe how magnesium, zinc have been studied. This is ingredient context only; the record does not establish that this product delivers the studied dose or outcome. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation.
FDA recall appears in this brand's history
This recall is not about the product on this page. Lyons Magnus, Inc recalled a different product on July 22, 2022. FDA has since closed that case. The recalled item was “Optimum Nutrition Gold Standard 100% Whey Chocolate 11 fl oz (325mL). UPC 7 48927-06409 4. Shake well. Best when served chilled. Manufactured for Optimum Nutrition, Inc., 350”. FDA recorded the reason as “Findings and potential for Cronobacter sakazakii and Clostridium botulinum”. Verify at FDA’s recall database.
Public label filing not saved
We have not found a public label filing for this exact product. That is a gap in our records, not evidence that no filing exists.
This item belongs to a catalog variation family
The paid catalog links this exact item to a parent listing. Review counts on public product pages may be shared across sizes, flavors, or other variants, so the count history is listing context — not evidence that reviewers received or tested this exact variant.
180-day review-count history is on file
Exact-listing history records written-review counts from 1,675 on 2026-04-07 to 1,673 on 2026-07-19 (net -2). Count movements can reflect sales, listing variants, collection resets, or moderation; this history does not establish whether reviews are authentic.
What to ask and check
What would settle the open questions
Why is this shown?
Everything we couldn’t verify is something a person can still ask about. Rather than leave gaps sitting as dead ends, we turn each one into a specific question — the exact document, citation, or number that would settle it — plus the things you can confirm yourself with the bottle in your hand.
Ask the brand or seller
1
Is this label filed with NIH’s Dietary Supplement Label Database (DSLD)?
Filing is voluntary, so absence proves nothing — but a filed label puts the full ingredient table on public record where anyone can read it.
Most brands and sellers publish a contact route. A clear answer adds evidence to the record; no answer leaves the question open.
Check for yourself — no one’s permission needed
1
Compare the panel on the bottle in your hand to the one shown in this record.
Ours was read from listing photos and can contain reading errors. The physical label is the source of truth — if they disagree, tell us and we’ll correct the record.
2
Scan the barcode on the package and confirm it reads 748927821710.
A mismatch between the barcode on the box and the one on the listing is worth pausing over — it can indicate a different variant, a repack, or a counterfeit.
3
Check the lot number and expiry on the bottle against any COA you’re given.
A certificate that doesn’t name your lot doesn’t describe what you’re holding.
These are the open questions on this specific record — not a warning about the product, and not a suggestion to buy or avoid it. Getting them answered is how you decide for yourself.
What the listing promises — claim by claim
Why is this shown?
A listing’s promises are the reason people buy. Each one gets its own row: what was promised, what evidence would settle it, and what we could actually find. We never call a claim false — only whether proof proportionate to it exists on the public record.
| Claim | Status | What we found |
|---|---|---|
| Benefit claim “…e Contains Zinc, Magnesium and Vitamin B6 to support the breakdown and transport of nutrients, he…” | Partly supported We looked for: whether the ingredient doses on the label match the doses used in published research | Published research exists for ingredients in this formula. Whether this product’s doses match those studies could not be confirmed. |
“No evidence located” does not mean a claim is false — it means the seller has not put evidence proportionate to the claim on the public record, and we could not find any. Absence of proof is not proof of absence.
This label vs. the doses studied
Why is this shown?
An ingredient can be well-studied at one amount and barely studied at the amount in your bottle. This lines the label up against the doses researchers actually used. It answers ‘are these the same numbers?’ — never ‘should you take this?’
| Ingredient | Where this label sits | Reading |
|---|---|---|
| Magnesium (as magnesium aspartate, magnesium | shaded = doses used in studies (200 mg–420 mg) · bar = this label | 435 mg — above the studied range |
| Zinc (as zinc aspartate, zinc monomethionine | shaded = doses used in studies (8 mg–40 mg) · bar = this label | 28 mg — within the studied range |
Matching a studied dose does not mean the product works, and missing it does not mean it fails — it shows whether the label and the research are talking about the same amounts. Not a recommendation to take any amount.
Documented cautions
- magnesium — daily oral use; chelated forms (glycinate) are studied for absorption — note labels may state compound mass rather than elemental magnesium, which differs ~7-fold
- zinc — daily oral use; sustained high intakes can interfere with copper absorption — a documented interaction, not advice
Statements from published sources about these ingredients — not advice about this product, and not a complete safety review. Anyone taking medication should talk to a pharmacist or clinician.
Verifiability profile — 3 of 6 public signals
✓ UPC / GTIN published✓ Supplement Facts visible in photos✓ Brand's own store found· Per-serving dose established — not published· Found in NIH's label catalog (DSLD) — not published· Third-party lab named or registry-certified — not published
What this listing gives the public to check. Publishing these signals doesn't prove quality — but withholding them means claims can only be taken on faith.
Identity
| UPC (barcode) — also our record ID | 748927821710 — via source listing UPC |
| Brand | Optimum Nutrition |
| Source listing identifier | B000GIQS02 |
| Retailer listing title | Optimum Nutrition Zinc and Magnesium Aspartate Recovery Supplement, 18… show full titleOptimum Nutrition Zinc and Magnesium Aspartate Recovery Supplement, 180 Ct |
| USPTO brand-owner record | GLANBIA PERFORMANCE NUTRITION LIMITED · IRELAND · registration 7185408 · GLANBIA HOUSE, KILKENNY, IRELAND |
| USPTO brand-owner record | Glanbia Nutritionals (Ireland) Limited (limited company (ltd.); IRELAND) · IRELAND · registration 6113658 · IRELAND); Glanbia House, Kilkenny, IRELAND |
From the label (photo-read)
| Serving size | 3 Capsules |
| Servings per container | 60 |
| Pack statement | 180 CAPSULES |
Supplement Facts panel (photo-read):
| Ingredient | Amount per serving | Reading confidence |
|---|---|---|
| Vitamin B6 (as pyridoxine hydrochloride) | 10 mg | High clearly legible in the photo |
| Magnesium (as magnesium aspartate, magnesium oxide) | 435 mg | High clearly legible in the photo |
| Zinc (as zinc aspartate, zinc monomethionine, zinc oxide) | 28 mg | High clearly legible in the photo |
Claims printed on the packaging:
“VITAMIN & MINERAL SUPPORT FOR ACTIVE ADULTS” · “POTENT COMBINATION OF ZINC, MAGNESIUM AND VITAMIN B6” · “TO HELP FILL GAPS IN MICRONUTRIENT INTAKE” · “BLEND OF ZINC, MAGNESIUM & VITAMIN B6” · “SUPPORTS THE” · “BREAKDOWN” · “AND TRANSPORT” · “OF NUTRIENTS”
Read by a vision model from 8 listing photos — verbatim extraction; OCR errors possible. Spot a mistake? It will be corrected on review.
Where it sells
| Seller | Price |
|---|---|
| Retailer listing ↗ | $39.99 checked Jul 26, 2026 — varies by variant/session; price history pending |
Brand store optimumnutrition.com: 55 supplement products (+2 merch items) — for comparison, single-focus brands typically carry 5–30 products; very broad catalogs are common among companies that rebrand ready-made formulas — a pattern note, not a verdict.
Reference links for identification only — LookCloser has no affiliate relationships and earns nothing from any link on this page.
Ingredient science — NIH references
Vitamin B6 — NIH ODS · MedlinePlus · PubMed (2,372) · UL 100 mg (adults; chronic high intake linked to neuropathy)
Magnesium — NIH ODS · MedlinePlus · PubMed (11,814) · UL 350 mg (SUPPLEMENTAL magnesium only (not from food))
Zinc — NIH ODS · MedlinePlus · PubMed (19,708) · UL 40 mg (adults, from all sources)
Reference data from the NIH Office of Dietary Supplements, IOM Dietary Reference Intakes, and PubMed. A Tolerable Upper Intake Level is a documented reference figure, not a safety verdict — both the listed amount and the reference are shown for your own judgment. LookCloser gives no medical advice.
Related research & consistency
magnesium — NIH ODS — Magnesium fact sheet · PubMed search: magnesium glycinate supplementation · WebMD: magnesium · ClinicalTrials.gov — 3,206 registered studies
ℹ Use pattern in research: daily oral use; chelated forms (glycinate) are studied for absorption — note labels may state compound mass rather than elemental magnesium, which differs ~7-fold.
zinc — NIH ODS — Zinc fact sheet · PubMed search: zinc supplementation trial · ClinicalTrials.gov — 1,598 registered studies
ℹ Use pattern in research: daily oral use; sustained high intakes can interfere with copper absorption — a documented interaction, not advice.
These notes state where label numbers and marketing framing sit relative to published research — documentation for your own judgment, not medical advice. LookCloser does not advise for or against taking any supplement.
Record 748927821710 · built July 26, 2026 · lookcloser.ai · corrections@lookcloser.ai