Magnesium amino acid chelate
19
labels across all brands · median 300 mg/serving
Brand · NIH DSLD
Woodstock Vitamins magnesium labels
Woodstock Vitamins files 5 on-market magnesium labels, and 2 of the 4 audited declare more of the named salt than a standard capsule can hold.
Labels (n)5
Median elemental mg/serving250 mg
Priced in gold set0
Mass budget · computed
What Woodstock Vitamins's declared salts weigh
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 | 4 |
|---|---|
| Fit a size 0 or 00 capsule | 1 |
| Require the largest standard size, 000 | 1 |
| Exceed every standard capsule | 2 |
Method and the corpus-wide figure: label mass-budget audit.
Salt portfolio · as filed
Which magnesium salts Woodstock Vitamins uses
| Salt | Labels | Elemental fraction | Compound needed per 100 mg |
|---|---|---|---|
| glycinate | 3 | 11.83–14.1% | 709–845 mg |
| citrate | 1 | 11.3–16.16% | 619–885 mg |
Composition across the portfolio · as filed
What Woodstock Vitamins puts in the capsule besides magnesium
- 3 of 5 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 Woodstock Vitamins claims on its labels
Filed declarations across this brand's labels: 5 distinct filed entries across 5 NIH DSLD labels, counted 2026-09-13; these are manufacturer statements.
- Adult (18 - 50 Years) — on 5 of 5 labels
- Gluten Free — on 5 of 5 labels
- Dairy Free — on 5 of 5 labels
- Vegan — on 3 of 5 labels
- Vegetarian — on 3 of 5 labels
What is not known · as of 2026-09-13
Gaps in the record for Woodstock Vitamins
- 1 of 5 label does not name the magnesium salt in the filed record, so no compound mass can be computed for it.
- 5 of 5 labels have no US retail listing matched as of 2026-09-13. That is a matching gap on our side, not evidence of unavailability.
Labels 5
| Easy MagnesiumNIH DSLD · Label 310207 · Capsule | glycinate, lysinate | 250 mg | 120 | 30.00 g | Not tracked yet |
| Easy MagnesiumNIH DSLD · Label 326357 · Capsule | glycinate, lysinate | 250 mg | 60 | 15.00 g | Not tracked yet |
| Magnesium CitrateNIH DSLD · Label 310266 · Capsule | form not mapped yet | 100 mg | 120 | 12.00 g | Not tracked yet |
| Magnesium Glycinate 400 mgNIH DSLD · Label 263073 · Capsule | form not mapped yet | 400 mg | 30 | 12.00 g | Not tracked yet |
| Mega MagnesiumNIH DSLD · Label 263091 · Capsule | amino acid chelate, citrate, malate | 400 mg | 30 | 12.00 g | Not tracked yet |
Forms filed
Compare within a form
Magnesium citrate
118
labels across all brands · median 217.5 mg/serving
Magnesium glycinate
65
labels across all brands · median 300 mg/serving
Magnesium lysinate
9
labels across all brands · median 235 mg/serving
Magnesium malate
39
labels across all brands · median 350 mg/serving
See all brands, all labels, or the priced form tables.
Filed composition facets
7 published excipient facets occur across 5 labels from Woodstock Vitamins in the NIH DSLD records, counted 2026-09-13.
- silicon dioxide: 5 of 5 labels.
- hypromellose: 3 of 5 labels.
- magnesium stearate: 3 of 5 labels.
- stearic acid: 2 of 5 labels.
- ascorbyl palmitate: 1 of 5 labels.
- cellulose: 1 of 5 labels.
- water: 1 of 5 labels.
Matching formulations across brands
1 published clusters include labels from Woodstock Vitamins, matched by filed ingredients and serving structure on 2026-09-13.
- 100 mg per unit, rounded to 5 mg; 4 filed ingredients: 1 labels from this brand, 2 labels and 2 brands in the cluster.
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.