Magnesium citrate
118
labels across all brands · median 217.5 mg/serving
Brand · NIH DSLD
Natural Factors BigFriends magnesium supplements: 1 product, 50 mg of magnesium per serving
1 Natural Factors BigFriends magnesium product in 1 form, led by citrate (1); median 50 mg of magnesium per serving. Inside: each product's mg and price.
Natural Factors BigFriends files 1 on-market magnesium label using one salt, citrate, with a median of 50 mg elemental magnesium per serving.
Labels (n)1
Median elemental mg/serving50 mg
Priced in gold set0
Salt portfolio · as filed
Which magnesium salts Natural Factors BigFriends uses
| Salt | Labels | Elemental fraction | Compound needed per 100 mg |
|---|---|---|---|
| citrate | 1 | 11.3–16.16% | 619–885 mg |
Composition across the portfolio · as filed
What Natural Factors BigFriends puts in the capsule besides magnesium
- 1 of 1 label lists 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.
- 1 label uses a cellulose-based shell.
Label declarations · as filed
What Natural Factors BigFriends claims on its labels
Filed declarations across this brand's labels: 7 distinct filed entries across 1 NIH DSLD labels, counted 2026-10-17; these are manufacturer statements.
- Children 4 or More Years of Age — on 1 of 1 label
- Vegan — on 1 of 1 label
- Vegetarian — on 1 of 1 label
- Gluten Free — on 1 of 1 label
- Dairy Free — on 1 of 1 label
- Sugar Free — on 1 of 1 label
- Children more than 1 but less than 4 — on 1 of 1 label
What is not known · as of 2026-11-02
Gaps in the record for Natural Factors BigFriends
- 1 of 1 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 1
| Magnesium Citrate Chewable 50 mgNIH DSLD · Label 247525 · Tablet or Pill | form not mapped yet | 50 mg | Not filed | — | Not tracked yet |
Forms filed
Compare within a form
See all brands, all labels, or the priced form tables.
Filed composition facets
3 published excipient facets occur across 1 labels from Natural Factors BigFriends in the NIH DSLD records, counted 2026-10-17.
- magnesium stearate: 1 of 1 labels.
- microcrystalline cellulose: 1 of 1 labels.
- stearic acid: 1 of 1 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.