Magnesium citrate
118
labels across all brands · median 217.5 mg/serving
Brand · NIH DSLD
Irwin Naturals magnesium labels
Irwin Naturals files 2 on-market magnesium labels using 2 different salts, with a median of 150 mg elemental magnesium per serving.
Labels (n)2
Median elemental mg/serving150 mg
Priced in gold set0
Mass budget · computed
What Irwin Naturals'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 | 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
Which magnesium salts Irwin Naturals uses
| Salt | Labels | Elemental fraction | Compound needed per 100 mg |
|---|---|---|---|
| hydroxide | 1 | 41.68% | 240 mg |
| citrate | 1 | 11.3–16.16% | 619–885 mg |
Composition across the portfolio · as filed
What Irwin Naturals puts in the capsule besides magnesium
- 2 labels use a gelatin shell.
Label declarations · as filed
What Irwin Naturals claims on its labels
Filed declarations across this brand's labels: 2 distinct filed entries across 2 NIH DSLD labels, counted 2026-09-13; these are manufacturer statements.
- Adult (18 - 50 Years) — on 2 of 2 labels
- Women (not pregnant or lactating) — on 1 of 2 labels
What is not known · as of 2026-09-13
Gaps in the record for Irwin Naturals
- 2 of 2 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 2
| Magnesium + AshwagandhaNIH DSLD · Label 323288 · Softgel Capsule | hydroxide | 150 mg | 20 | 3.00 g | Not tracked yet |
| Turmeric After-Sport With MagnesiumNIH DSLD · Label 45024 · Softgel Capsule | citrate | 150 mg | 20 | 3.00 g | Not tracked yet |
Forms filed
Compare within a form
Magnesium hydroxide
6
labels across all brands · median 124 mg/serving
See all brands, all labels, or the priced form tables.
Filed composition facets
8 published excipient facets occur across 2 labels from Irwin Naturals in the NIH DSLD records, counted 2026-09-13.
- beeswax: 2 of 2 labels.
- gelatin: 2 of 2 labels.
- glycerin: 2 of 2 labels.
- titanium dioxide: 2 of 2 labels.
- water: 2 of 2 labels.
- dicalcium phosphate: 1 of 2 labels.
- maltodextrin: 1 of 2 labels.
- sunflower lecithin: 1 of 2 labels.
FDA recall records for this firm
The FDA enforcement database holds 1 recall records naming Irwin Naturals (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 |
|---|---|---|---|---|---|
| 2013-11-13 | Class II | Irwin Naturals Daily Digestive Enzymes 45 ct, Item IN057552, UPC Code: 7 10363 57552 6 Recalling firm: Irwin Naturals. Description does not name a magnesium product. | Irwin Naturals is recalling Daily Digestive Enzymes and Dual Action Cleanse because they may possibly be contaminated with chloramphenicol. | Terminated | F-0120-2014 |
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 26 reports naming Irwin Naturals 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.