Magnesium glycinate
65
labels across all brands · median 300 mg/serving
Brand · NIH DSLD
PCOS Nutrition Center files 1 on-market magnesium label using one salt, glycinate, with a median of 300 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 | 1 |
|---|---|
| Fit a size 0 or 00 capsule | 0 |
| Require the largest standard size, 000 | 1 |
| 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 |
|---|---|---|---|
| glycinate | 1 | 11.83–14.1% | 709–845 mg |
Composition across the portfolio · as filed
Label declarations · as filed
Filed declarations across this brand's labels: 3 distinct filed entries across 1 NIH DSLD labels, counted 2026-09-13; these are manufacturer statements.
What is not known · as of 2026-09-13
| Magnesium Ultra AbsorbNIH DSLD · Label 331439 · Capsule | bisglycinate | 300 mg | 60 | 18.00 g | Not tracked yet |
Forms filed
65
labels across all brands · median 300 mg/serving
See all brands, all labels, or the priced form tables.
1 published excipient facets occur across 1 labels from PCOS Nutrition Center in the NIH DSLD records, counted 2026-09-13.
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.