The dose claim fits the serving — physically possible
Claimed magnesium 300.0 mg is 15% of the ≈2,000 mg serving (serving size on the label, keyed to UPC 051494103968) — within physical limits.
Full record · 051494103968 · back to the summary
MegaFood Magnesium Glycinate, Malate, Citrate 300mg
Exact product checkedGTIN 00051494103968 · checked 2026-07-30
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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.
Panel, decoded
The 300 mg magnesium (as magnesium malate, magnesium citrate, magnesium glycinate) claim matches the panel
MARKETING300 mg — per-serving claim
PANELMagnesium (as magnesium malate, magnesium citrate, magnesium glycinate) 300 mg — same amountMagnesium (as magnesium malate, magnesium citrate, magnesium glycinate) 300 mg
matches panelWe did the comparison: the listing claims 300 mg of magnesium (as magnesium malate, magnesium citrate, magnesium glycinate), and the listing-image panel shows 300 mg magnesium (as magnesium malate, magnesium citrate, magnesium glycinate) serving size 2 capsules. Those amounts agree. This is internal consistency, not independent lab testing.
| Panel row | Amount | %DV | What to notice |
|---|---|---|---|
| Magnesium (as magnesium malate, magnesium citrate, magnesium glycinate) | 300 mg | — | |
| Organic spinach leaf | 50 mg | — |
FDA rules (21 CFR 101.36) require the amount of each dietary ingredient per serving unless hidden in a listed “proprietary blend” (legal, but a transparency yellow flag). A label stating no amount at all is non-compliant — a checkable red flag. This panel states amounts; any remaining comparison concerns the front-label framing.
vision:claude-cli:subscription Amounts are shown as listed panel data, not independently lab-tested contents.
Every check we ran
Confirmed evidence
What checked out3
These checks found support in the public record. They confirm specific facts, not the product as a whole.
Confirmed
Every ingredient amount is disclosed
The panel gives a per-ingredient amount rather than hiding quantities inside a proprietary blend, so each one can be compared to published research.
Barcode confirmed in an outside database
Open Food Facts resolves 051494103968 to "Magnesium" (MegaFood) — consistent with this listing.
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 missing9
We looked for these signals but could not settle them from public sources. A gap is not a strike.
“Lab tested” claimed, but no lab or report named
The observed listing claims third-party testing without naming a lab or certifier. No product-bound report is saved, so the claim cannot be verified as stated. NSF, IFOS, USP, and Informed-Sport were not checked in this record.
Listing claim matches the label panel
The listing claims 300 mg; the photo-read Supplement Facts panel shows Magnesium (as magnesium malate, magnesium citrate, magnesium glycinate) at 300 mg per serving — the listing text and its photo-read panel agree; this is internal consistency, not independent testing.
Magnesium amount, in daily-intake context
label states 300 mg/serving — about 71% 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. Sources: NIH ODS — Magnesium fact sheet, PubMed search: magnesium glycinate supplementation.
Cost to reach a studied dose
At 1.0 serving(s) a day to reach the low end of the studied range (200–420 mg), this product runs roughly $16 per month. A price observation, not a recommendation.
Research context is available for the listed ingredients
Published sources describe how magnesium 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.
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.
No recall found — which is not the same as being tested
This means only that no enforcement record matched the brand name — it does not mean the product was tested, reviewed, or cleared by FDA. New and untested products also have no recall records.
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 308 on 2025-06-29 to 445 on 2026-07-24 (net +137). 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
Answered by the panel: 0.3 g of the 0.3 g headline is magnesium. Which independent lab can confirm that amount in this product?
The panel resolves the front-label arithmetic. The remaining question is lot-specific contents and stability; published category testing gives context, not a test of this product.
2
Can you send the certificate of analysis (COA) for the lot number on my bottle?
A real COA names the testing laboratory, the test date, the lot it covers, and what was measured. “Third-party tested” with no document behind it is a marketing sentence.
3
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 051494103968.
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 |
|---|---|---|
| Quality-testing claim “…COMMITTED TO QUALITY: Vegetarian, gluten-free, third-party tested for 150+ chemical substances, GMP quality assured, and made without the top nine food allergens includi” | Claimed, not verifiable We looked for: the observed listing, saved brand product page, any linked COA or test report; NSF, IFOS, USP, Informed-Sport were not queried | No named laboratory or lot-specific certificate was found for this exact product. A related brand page names no testing issuer and links no product-bound report; 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. |
| Manufacturing claim “…COMMITTED TO QUALITY: Vegetarian, gluten-free, third-party tested for 150+ chemical substances, GMP quality assured, and made without the top nine food allergens includi” | Partly supported We looked for: the facility registration or certificate behind the claim | “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. |
| Benefit claim “…HIGHLY ABSORBABLE BLEND: Help relax the body with this chelated Magnesium supplement, formulated with three highly absorbable(1) forms of Magnesium; supports a normal sl” | Partly supported We looked for: whether the ingredient doses on the label match the doses used in published research | Ingredient evidence exists; on dose: label states 300 mg/serving — about 71% 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. |
“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 malate, magnesium ci | shaded = doses used in studies (200 mg–420 mg) · bar = this label | 300 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
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 — 4 of 6 public signals
✓ Per-serving dose established✓ UPC / GTIN published✓ Supplement Facts visible in photos✓ Brand's own store found· 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 | 051494103968 — via source listing UPC |
| Brand | MegaFood |
| Source listing identifier | B081FXFHLJ |
| Retailer listing title | MegaFood Magnesium Glycinate, Malate, Citrate 300mg, 60 Capsules… show full titleMegaFood Magnesium Glycinate, Malate, Citrate 300mg, 60 Capsules |
From the label (photo-read)
| Serving size | Serving size 2 capsules |
| Servings per container | 30 |
| Pack statement | 60 Capsules | 30 Servings |
| Badges printed on pack | VEGETARIAN, GLUTEN FREE, MADE WITHOUT 9 FOOD ALLERGENS, NO MILK, NO EGG, NO PEANUTS, NO TREE NUTS, NO WHEAT |
Supplement Facts panel (photo-read):
| Ingredient | Amount per serving | Reading confidence |
|---|---|---|
| Magnesium (as magnesium malate, magnesium citrate, magnesium | 300 mg | High clearly legible in the photo |
| Organic spinach leaf | 50 mg | High clearly legible in the photo |
Claims printed on the packaging:
“Supports muscle & heart function” · “Helps relax the body & supports a normal sleep cycle” · “Supports a healthy stress response” · “Glycinate, Malate, Citrate” · “THE MEGAFOOD WAY ABSORBS LIKE FOOD” · “DIETARY SUPPLEMENT” · “New look” · “Same trusted formula”
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 ↗ | $15.97 checked Aug 02, 2026 — varies by variant/session; price history pending |
Brand store megafood.com: 100 supplement products (+7 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
Magnesium — NIH ODS · MedlinePlus · PubMed (11,814) · UL 350 mg (SUPPLEMENTAL magnesium only (not from food))
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 Dosage: label states 300 mg/serving — about 71% 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.
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.
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 051494103968 · built August 02, 2026 · lookcloser.ai · corrections@lookcloser.ai