Published research exists for ingredients in this formula. Whether this product’s doses match those studies could not be confirmed.

Spectrum 5 Magnesium
Checked against public sources on July 25, 2026 · LookCloser does not sell or recommend supplements.
Does the marketing hold up?
The front says 5-in-1; the label publishes 1 amount. The listing advertises “5-in-1”. The Supplement Facts panel publishes 1 amount. The remaining ingredients may be present without a published amount. …
“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.
What the Supplement Facts panel says
| Magnesium | 500mg 119% |
|---|
Printed on the package: GMP CERTIFIED · MADE IN USA · NEW AQUA-IONIC TECHNOLOGY · 5X HIGHER ABSORPTION · 72 TRACE MINERAL MATRIX · Gluten Free · Sugar Free · Soy Free
We read only 1 line from this label, but the listing describes several ingredients. Treat this as an incomplete read rather than as the whole label.
The checks, one by one
The public sources did not settle the marketing promises on this label.
◐Partly confirmed2
“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 independently2
No named laboratory or lot-specific certificate was found for this exact product. A related brand page repeats a testing claim but names no issuer; its UPC is not published. 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.
“Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product.
We looked and found no public proof. That does not count against the product.
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
Reviews rose from 20 to 483 between September 10, 2025 and August 28, 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 20 to 483 between September 10, 2025 and August 28, 2026. The largest rise inside any single 30-day window was about 80, 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.
Filed address
130 Williams St. Ste 501, Spartanburg, South Carolina 29301, 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 ↗
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.
Price check for this exact product
Amazon
Exact UPC/GTIN match$0.83 per labeled serving
matching UPC/GTIN · checked Aug 29, 2026
View on Amazon ↗Brand website
Official product-page candidate · UPC absentOfficial shopping lead; excluded from exact price comparisons.
Spectrum 5 Magnesium Complex · Default Title. Confirm the package UPC/GTIN before buying.
Check brand website ↗iHerb
Not confirmedWe 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 confirmedWe 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 confirmedWe 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.
The observed listing and related 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 September 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.