Magnesium citrate
118
labels across all brands · median 217.5 mg/serving
Brand · NIH DSLD
Bio-Tech Pharmacal files 2 on-market magnesium labels using one salt, citrate, with a median of 150 mg elemental magnesium per serving.
Mass budget · computed
A Supplement Facts panel declares the element; the salt carrying it is heavier. Dividing each label's declared magnesium by its salt's elemental fraction gives the powder mass the serving must contain — and whether that fits a capsule.
| Capsule labels audited | 2 |
|---|---|
| Fit a size 0 or 00 capsule | 2 |
| Require the largest standard size, 000 | 0 |
| Exceed every standard capsule | 0 |
Method and the corpus-wide figure: label mass-budget audit.
Salt portfolio · as filed
| Salt | Labels | Elemental fraction | Compound needed per 100 mg |
|---|---|---|---|
| citrate | 2 | 11.3–16.16% | 619–885 mg |
Composition across the portfolio · as filed
Label declarations · as filed
Filed declarations across this brand's labels: 4 distinct filed entries across 2 NIH DSLD labels, counted 2026-09-13; these are manufacturer statements.
What is not known · as of 2026-09-13
| Magnesium CitrateNIH DSLD · Label 217402 · Capsule | citrate | 150 mg | 90 | 13.50 g | Not tracked yet |
| Magnesium CitrateNIH DSLD · Label 217403 · Capsule | citrate | 150 mg | 30 | 4.50 g | Not tracked yet |
Forms filed
118
labels across all brands · median 217.5 mg/serving
See all brands, all labels, or the priced form tables.
The FDA adverse event reporting system (CAERS) holds 1 reports naming Bio-Tech Pharmacal as of 2026-09-13. This is a count of submitted reports across all the firm's products; it is not an incidence rate and implies no causation.
The metric
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.