Magnesium aspartate
33
labels across all brands · median 200 mg/serving
Brand · NIH DSLD
Pure Encapsulations magnesium labels
Pure Encapsulations files 13 on-market magnesium labels using 4 different salts, with a median of 135 mg elemental magnesium per serving.
Labels (n)13
Median elemental mg/serving135 mg
Priced in gold set6
Mass budget · computed
What Pure Encapsulations'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 | 6 |
|---|---|
| Fit a size 0 or 00 capsule | 1 |
| Require the largest standard size, 000 | 5 |
| Exceed every standard capsule | 0 |
Method and the corpus-wide figure: label mass-budget audit.
Salt portfolio · as filed
Which magnesium salts Pure Encapsulations uses
| Salt | Labels | Elemental fraction | Compound needed per 100 mg |
|---|---|---|---|
| citrate | 3 | 11.3–16.16% | 619–885 mg |
| glycinate | 2 | 11.83–14.1% | 709–845 mg |
| malate | 1 | 13.2–15.54% | 644–758 mg |
| aspartate | 1 | 8.42% | 1,188 mg |
Composition across the portfolio · as filed
What Pure Encapsulations puts in the capsule besides magnesium
- 1 label uses a gelatin shell.
- 9 labels use a cellulose-based shell.
Label declarations · as filed
What Pure Encapsulations claims on its labels
Filed declarations across this brand's labels: 3 distinct filed entries across 13 NIH DSLD labels, counted 2026-09-13; these are manufacturer statements.
- Adult (18 - 50 Years) — on 13 of 13 labels
- Gluten Free — on 13 of 13 labels
- Children 4 or More Years of Age — on 1 of 13 labels
What is not known · as of 2026-09-13
Gaps in the record for Pure Encapsulations
- 6 of 13 labels do not name the magnesium salt in the filed record, so no compound mass can be computed for them.
- 7 of 13 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 13
| Magnesium (Citrate)NIH DSLD · Label 201495 · Capsule | citrate | 150 mg | 90 | 13.50 g | Verified |
| Magnesium (Citrate)NIH DSLD · Label 294013 · Capsule | form not mapped yet | 150 mg | 180 | 27.00 g | Pending verification |
| Magnesium (Citrate/Malate)NIH DSLD · Label 184671 · Capsule | citrate, malate | 120 mg | 90 | 10.80 g | Verified |
| Magnesium (Citrate/Malate)NIH DSLD · Label 294014 · Capsule | form not mapped yet | 120 mg | 180 | 21.60 g | Not tracked yet |
| Magnesium (Glycinate)NIH DSLD · Label 205309 · Capsule | glycinate | 120 mg | 180 | 21.60 g | Verified |
| Magnesium (Glycinate)NIH DSLD · Label 219667 · Capsule | glycinate | 120 mg | 90 | 10.80 g | Verified |
| Magnesium (Powder)NIH DSLD · Label 322383 · Powder | form not mapped yet | 250 mg | 60 | 15.00 g | Not tracked yet |
| Magnesium EasySticks Natural Blueberry flavorNIH DSLD · Label 204716 · Powder | malate | 150 mg | 30 | 4.50 g | Verified |
| Magnesium LiquidNIH DSLD · Label 294018 · Liquid | form not mapped yet | Not determinable | 48 | — | Not tracked yet |
| Potassium Magnesium (Aspartate)NIH DSLD · Label 278242 · Capsule | aspartate | 70 mg | 180 | 12.60 g | Not tracked yet |
| Potassium Magnesium (Citrate)NIH DSLD · Label 278245 · Capsule | form not mapped yet | 70 mg | 180 | 12.60 g | Not tracked yet |
| UltraMag MagnesiumNIH DSLD · Label 247324 · Capsule | form not mapped yet | 225 mg | 120 | 27.00 g | Not tracked yet |
| UltraMag MagnesiumNIH DSLD · Label 278375 · Capsule | form not mapped yet | 225 mg | 120 | 27.00 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 malate
39
labels across all brands · median 350 mg/serving
See all brands, all labels, or the priced form tables.
Filed composition facets
12 published excipient facets occur across 13 labels from Pure Encapsulations in the NIH DSLD records, counted 2026-09-13.
- ascorbyl palmitate: 8 of 13 labels.
- vegetarian capsule: 7 of 13 labels.
- water: 4 of 13 labels.
- cellulose: 3 of 13 labels.
- citric acid: 2 of 13 labels.
- xylitol: 2 of 13 labels.
- magnesium oxide: 1 of 13 labels.
- malic acid: 1 of 13 labels.
- rice flour: 1 of 13 labels.
- stevia leaf extract: 1 of 13 labels.
- sunflower lecithin: 1 of 13 labels.
- xanthan gum: 1 of 13 labels.
FDA recall records for this firm
The FDA enforcement database holds 2 recall records naming Pure Encapsulations (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 |
|---|---|---|---|---|---|
| 2017-12-06 | Class III | Pure Encapsulations Systemic Enzyme Complex DIETARY SUPPLEMENT 180 CAPSULES UPC: 7 66298 00862 2 Recalling firm: Pure Encapsulations, Inc.. Description does not name a magnesium product. | Product contains undeclared sulfites. | Terminated | F-0396-2018 |
| 2017-12-06 | Class III | pure encapsulations AI Enzymes DIETARY SUPPLEMENT 120 CAPSULES UPC: 7 66298 00318 4 and 60 CAPSULES UPC: 7 66298 00317 7 Recalling firm: Pure Encapsulations, Inc.. Description does not name a magnesium product. | Product contains undeclared sulfites. | Terminated | F-0397-2018 |
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 54 reports naming Pure Encapsulations 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.