“Contains Zinc, Magnesium and Vitamin B6 to support the breakdown and transport of nutrients,”
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 00748927821710Optimum Nutrition · checked Jul 26, 2026USPTO returned 2 exact supplement-class owner records · inspect the identity trailPackage says manufactured by: OPTIMUM NUTRITION, INC. · 3500 Lacey Road, Suite 1200
Downers Grove, IL 60515
Quick read · Optimum Nutrition
Optimum Nutrition Zinc and Magnesium Aspartate Recovery…
Checked against public sources on July 26, 2026 · LookCloser does not sell or recommend supplements.
180capsules · 60 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?Can’t check — no panel filed
What a serving costsNo exact-match price found
Is it tested?No testing claim made
Who’s behind it?USPTO lists 2 owner recordssame brand name, more than one registrant — we don’t choose between them
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
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. 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.…”
Locked evidence record →Open the full source-linked findingPublic contextWho is behind it?
Registered owner records: GLANBIA PERFORMANCE NUTRITION LIMITED · Glanbia Nutritionals (Ireland) Limited (limited company (ltd.); IRELAND)
The public ownership record is ambiguous. We show the exact candidates instead of choosing one by name similarity.
Evidence and sources
USPTO returned multiple live supplement-class records for the exact brand wordmark: GLANBIA PERFORMANCE NUTRITION LIMITED, Glanbia Nutritionals (Ireland) Limited (limited company (ltd.); IRELAND). …
Locked evidence record →Open the full source-linked findingChecks outWho is behind it?
The barcode identity checks out · 748927821710.
The barcode matches, so we are checking the right product rather than a look-alike.
Evidence and sources
UPCitemdb resolves 748927821710 to "Optimum Nutrition Zinc Magnesium Aspartate Zinc for Immune Support Muscle Reco" (Optimum Nutrition) — consistent with this listing.
Locked evidence record →Open the full source-linked findingChecks outCan you trust the review pattern?
Reviews fell from 1,677 to 1,673 between April 21 and July 19, 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 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.
Locked evidence record →Open the full source-linked findingWhat remains open 2
- Panel amounts still need a clearer source image.
- We have not found a public label filing for this exact product.
These are evidence gaps, not strikes against the product.
Who owns the brand wordmark?
The brand has 2 exact supplement-class records
These are the USPTO records behind the brand name. We show them all rather than choosing one by similarity.
🌍GLANBIA PERFORMANCE NUTRITION LIMITED
IRELAND · Registration 7185408
GLANBIA HOUSE, KILKENNY, IRELAND
Goods covered by this record
IC 005: Protein powders for the preparation of beverages, namely, whey protein for use as a nutritional supplement in various powdered and ready-to-drink beverages; protein powders for the preparation of beverages, namely, plant protein for use as a nutritional supplement in various powdered and ready-to-drink beverages; protein powders for the preparation of beverages, namely, whey protein supplements.; IC 030: Ready to drink beverages, namely, coffee based beverages, coffee beverages fortified with protein powder.; IC 032: Ready to drink beverages, namely, protein enriched beverages being an aromatized beverage based on protein for use as a food fillers and not for use as a meal replacement, energy drinks and sports drinks; powders for the preparation of beverages, namely, whey-based protein beverages, plant-based protein beverages being an aromatized beverage based on protein for use as a food filler and not for use as meal replacements, energy drinks and sports drinks; carbonated and non-carbonated flavored beverages, enhanced with vitamins, minerals and nutrients, namely, energy drinks and sports drinks; smoothies; ready to drink beverages, namely, whey-protein based beverages being whey beverages.
🌍Glanbia Nutritionals (Ireland) Limited (limited company (ltd.); IRELAND)
IRELAND · Registration 6113658
IRELAND); Glanbia House, Kilkenny, IRELAND
Goods covered by this record
IC 005: Dietary and nutritional supplements; dietary food supplements; vitamin and mineral nutritional supplements; dietary supplement drink mixes; dietary food supplements in liquid drink form; nutritional supplement for boosting energy; powdered nutritional and dietary supplement drink mixes; powdered nutritional supplement drink mixes; powdered nutritional supplement drink mix containing protein.
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 ↗
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.
Where it sells
Price check for this exact product
Amazon
Exact UPC/GTIN match$39.99
$0.67 per labeled serving
matching UPC/GTIN · checked Jul 26, 2026
View on Amazon ↗Brand website
Official product-page candidate · UPC absent$28.49
Official shopping lead; excluded from exact price comparisons.
Zinc Magnesium Aspartate · 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.
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 26, 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.