Brand · NIH DSLD
Puritan's Pride magnesium labels
Puritan's Pride files 5 on-market magnesium labels using 2 different salts, with a median of 250 mg elemental magnesium per serving.
Mass budget · computed
What Puritan's Pride'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 | 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
Which magnesium salts Puritan's Pride uses
| Salt | Labels | Elemental fraction | Compound needed per 100 mg |
|---|---|---|---|
| citrate | 1 | 11.3–16.16% | 619–885 mg |
| glycinate | 1 | 11.83–14.1% | 709–845 mg |
Composition across the portfolio · as filed
What Puritan's Pride puts in the capsule besides magnesium
- 2 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.
- 5 labels use a cellulose-based shell.
Label declarations · as filed
What Puritan's Pride 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
- Sugar Free — on 5 of 5 labels
- Vegetarian — on 3 of 5 labels
What is not known · as of 2026-09-13
Gaps in the record for Puritan's Pride
- 3 of 5 labels do not name the magnesium salt in the filed record, so no compound mass can be computed for them.
- 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
| Magnesium 250 mgNIH DSLD · Label 318160 · Other (e.g. tea bag) | form not mapped yet | 250 mg | 100 | 25.00 g | Not tracked yet |
| Magnesium 250 mgNIH DSLD · Label 318295 · Other (e.g. tea bag) | form not mapped yet | 250 mg | 200 | 50.00 g | Not tracked yet |
| Magnesium CitrateNIH DSLD · Label 318220 · Other (e.g. tea bag) | form not mapped yet | 400 mg | 45 | 18.00 g | Not tracked yet |
| Magnesium GlycinateNIH DSLD · Label 318161 · Capsule | form not mapped yet | 240 mg | 30 | 7.20 g | Not tracked yet |
| Vitamin D3 with MagnesiumNIH DSLD · Label 318208 · Tablet or Pill | form not mapped yet | 100 mg | Not filed | — | Not tracked yet |
Forms filed
Compare within a form
These labels file no magnesium form text (form not mapped yet).
See all brands, all labels, or the priced form tables.
Filed composition facets
8 published excipient facets occur across 5 labels from Puritan's Pride in the NIH DSLD records, counted 2026-09-13.
- cellulose: 5 of 5 labels.
- glycerin: 4 of 5 labels.
- silicon dioxide: 4 of 5 labels.
- carnauba wax: 2 of 5 labels.
- magnesium stearate: 2 of 5 labels.
- stearic acid: 2 of 5 labels.
- ascorbyl palmitate: 1 of 5 labels.
- dicalcium phosphate: 1 of 5 labels.
FDA recall records for this firm
The FDA enforcement database holds 1 recall records naming Puritan's Pride (queried 2026-09-13); 0 of them concern a magnesium product.
These are exact brand-string matches in the recalling-firm field or product description, including other products. A name match does not establish that two similarly named firms are the same legal entity. The recalling firm and recalled product are shown in each row.
| Report date | Class | Product described by FDA | Reason for recall | Status | openFDA record |
|---|---|---|---|---|---|
| 2018-08-29 | Class II | BLUE GREEN ALGAE: Packaged under the following brands: AMERICAN HEALTH KALMATH SHORES BLUE GREEN ALGAE, 120 CAPSULES, UPC: 0 76630 02542 3 and Puritan's Pride PREMIUM Kalamath Lake Blue Green Algae, 500 MG, 120 RAPID RELEASE CAPSULES, UPC 0 74312 12542 3 Recalling firm: Natures Bounty Inc. Description does not name a magnesium product. | High level of microcystin observed in the product. | Terminated | F-1835-2018 |
FDA assigns 3 recall classes by the assessed hazard, using the FDA classification definitions, checked 2026-09-13:
- Class I: Exposure to or use of the violating product carries a reasonable probability of serious harm to health or death.
- Class II: Exposure or use may produce temporary or medically reversible harm; the probability of serious harm is remote.
- Class III: Adverse health consequences from exposure or use are unlikely.
The FDA adverse event reporting system (CAERS) holds 1062 reports naming Puritan's Pride 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
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.