Comparison
Ultra-Pure Calcium and Cal-M-D
Ultra-Pure Calcium (Purity Products) lists 4 distinct ingredients and Cal-M-D (Maxi Health) 4 (rows of one ingredient counted once); 4 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 | Ultra-Pure Calcium | Cal-M-D |
|---|---|---|
| Calcium | 500 mg (38%) | 1,000 mg (77%) |
| Vitamin D | 25 mcg (125%) | 25 mcg (125%) |
| Magnesium | 400 mg (95%) | 500 mg (119%) |
| Vitamin K | 80 mcg (67%) | 100 mcg (83%) |
Amounts are per serving as DSLD gives them: Ultra-Pure Calcium, 4 tablets; Cal-M-D, 4 tablets. Current labels entered March 2021 and February 2025. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Ultra-Pure CalciumPurity Products: every row against all products listing it
- Cal-M-DMaxi Health: every row against all products listing it