Magnesium oxide
108
labels across all brands · median 320 mg/serving
Brand · NIH DSLD
Wonder Labs magnesium supplements: 4 products in 2 forms, 483 mg of magnesium per serving
4 Wonder Labs magnesium products in 2 forms, led by oxide (3); median 483 mg of magnesium per serving. Inside: each product's mg and price.
Wonder Labs files 4 on-market magnesium labels using 2 different salts, with a median of 482.6 mg elemental magnesium per serving.
Labels (n)4
Median elemental mg/serving482.6 mg
Priced in gold set3
Salt portfolio · as filed
Which magnesium salts Wonder Labs uses
| Salt | Labels | Elemental fraction | Compound needed per 100 mg |
|---|---|---|---|
| oxide | 3 | 60.32% | 166 mg |
| glycinate | 1 | 11.83–14.1% | 709–845 mg |
Composition across the portfolio · as filed
What Wonder Labs puts in the capsule besides magnesium
- 4 of 4 labels list magnesium stearate. Stearate is 4.1% magnesium by mass and that magnesium is not on the Supplement Facts line; the amount of stearate is not declared, so it cannot be quantified.
- 4 labels use a cellulose-based shell.
Label declarations · as filed
What Wonder Labs claims on its labels
Filed declarations across this brand's labels: 3 distinct filed entries across 4 NIH DSLD labels, counted 2026-10-17; these are manufacturer statements.
- Adult (18 - 50 Years) — on 4 of 4 labels
- Gluten Free — on 4 of 4 labels
- Sugar Free — on 3 of 4 labels
What is not known · as of 2026-11-02
Gaps in the record for Wonder Labs
- 1 of 4 label has no US retail listing matched as of 2026-11-02. That is a matching gap on our side, not evidence of unavailability.
Labels 4
| Magnesium GlycinateNIH DSLD · Label 325862 · Capsule | form not mapped yet | Not determinable | 60 | — | Not tracked yet |
| Magnesium Oxide 400NIH DSLD · Label 261002 · Tablet or Pill | form not mapped yet | 482.6 mg | 125 | 60.33 g | Verified |
| Magnesium Oxide 400NIH DSLD · Label 262919 · Tablet or Pill | form not mapped yet | 482.6 mg | 125 | 60.33 g | Verified |
| Magnesium Oxide 400NIH DSLD · Label 316129 · Tablet or Pill | form not mapped yet | 482.6 mg | 125 | 60.33 g | Verified |
Forms filed
Compare within a form
Magnesium glycinate
65
labels across all brands · median 300 mg/serving
See all brands, all labels, or the priced form tables.
Filed composition facets
4 published excipient facets occur across 4 labels from Wonder Labs in the NIH DSLD records, counted 2026-10-17.
- cellulose: 4 of 4 labels.
- magnesium stearate: 4 of 4 labels.
- silicon dioxide: 4 of 4 labels.
- stearic acid: 1 of 4 labels.
The metric
What EC100 measures
EC100 = container price ÷ (elemental mg per serving × servings per container ÷ 100)
It normalizes the declared elemental amount to a 100 mg unit. It does not score ingredients, quality, or outcomes.