Comparison
Slow Release Iron and Ferrous Sulfate
Slow Release Iron (21st Century) lists 2 distinct ingredients and Ferrous Sulfate (Reliable 1 Laboratories) 2 (rows of one ingredient counted once); 2 are on both labels. On the site's similarity measure, which compares ingredient lists (1 for the same list, rarer ingredients counting for more; amounts are not part of it), the two formulas score 1.00: the same ingredients, at the amounts in the table below.
| Ingredient | Slow Release Iron | Ferrous Sulfate |
|---|---|---|
| Calcium | 31 mg (2%) | 20 mg (2%) |
| Iron | 45 mg (250%) | 65 mg (361%) |
Amounts are per serving as DSLD gives them: Slow Release Iron, 1 tablet; Ferrous Sulfate, 1 tablet. Current labels entered January 2022 and January 2020. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Slow Release Iron21st Century: every row against all products listing it
- Ferrous SulfateReliable 1 Laboratories: every row against all products listing it