Brand · NIH DSLD
21st Century magnesium labels
21st Century files 1 on-market magnesium label; the magnesium salt is not named in the filed record for it, so the compound mass cannot be computed.
Composition across the portfolio · as filed
What 21st Century puts in the capsule besides magnesium
- 1 label uses a cellulose-based shell.
Label declarations · as filed
What 21st Century claims on its labels
Filed declarations across this brand's labels: 2 distinct filed entries across 1 NIH DSLD labels, counted 2026-09-13; these are manufacturer statements.
- Adult (18 - 50 Years) — on 1 of 1 label
- Gluten Free — on 1 of 1 label
What is not known · as of 2026-09-13
Gaps in the record for 21st Century
- 1 of 1 label does not name the magnesium salt in the filed record, so no compound mass can be computed for it.
- 1 of 1 label has no US retail listing matched as of 2026-09-13. That is a matching gap on our side, not evidence of unavailability.
Labels 1
| Magnesium 250 mgNIH DSLD · Label 258459 · Tablet or Pill | form not mapped yet | 250 mg | 110 | 27.50 g | 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
3 published excipient facets occur across 1 labels from 21st Century in the NIH DSLD records, counted 2026-09-13.
- cellulose: 1 of 1 labels.
- croscarmellose sodium: 1 of 1 labels.
- stearic acid: 1 of 1 labels.
FDA recall records for this firm
The FDA enforcement database holds 4 recall records naming 21st Century (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 |
|---|---|---|---|---|---|
| 2021-05-26 | Class II | 21st Century Vitamin D3 125 mcg (5000 IU) tablet, 100 count, UPC 7-40985-27431-6, 21st Century HealthCare, Inc., 2119 Wilson St., Tempe, AZ 85282 Recalling firm: Twenty-First Century Healthcare, Inc. Description does not name a magnesium product. | A small quantity of bottles of Vitamin D3 125 mcg ((5000 IU) 100 ct. were mislabeled as Vitamin D3 25 mcg (1000 IU). Secondary labeling on the bottles (back label) is correctly labeled as Vitamin D3 125 mcg (5000 IU). | Terminated | F-0543-2021 |
| 2017-11-15 | Class II | 21st CENTURY SNACK FOODS DARK CHOCOLATE ALMONDS Roasted Almonds Covered in Rich Dark Chocolate Net Wt. 6oz (170g) UPC: 0 30603 22854 9. Recalling firm: 21ST CENTURY SNACK FOODS. Description does not name a magnesium product. | Product contains undeclared milk. | Terminated | F-0347-2018 |
| 2013-11-20 | Class II | Digestive Enzymes, 60 Capsules/Bottle under the following brand names: 21st Century Digestive Enzymes, 60 Capsules/Bottle. HyVee Digestive Eymes, 60 Capsules/Bottle. Recalling firm: 21st Century Healthcare, Inc.. Description does not name a magnesium product. | This voluntary recall is initiated because raw material used may contain trace amounts of the antibiotic chloramphenicol. | Terminated | F-0165-2014 |
| 2012-08-01 | Class II | 21st Century Foods Soy Tempeh, packaged in 12 lb plastic bags and 8 oz containers Recalling firm: 21st Century Foods, Inc.. Description does not name a magnesium product. | Product tested positive for the presence of coliforms | Terminated | F-1773 |
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 20 reports naming 21st Century 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.