Comparison
C-500 Plus and C-500 Calcium Ascorbate-C
C-500 Plus (Altrum) lists 3 distinct ingredients and C-500 Calcium Ascorbate-C (NOW) 3 (rows of one ingredient counted once); 3 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 | C-500 Plus | C-500 Calcium Ascorbate-C |
|---|---|---|
| Vitamin C | 500 mg (556%) | 500 mg (556%) |
| Calcium | 55 mg (4%) | 55 mg (4%) |
| Flavonoid | 10 mg | 10 mg |
Amounts are per serving as DSLD gives them: C-500 Plus, 1 veg capsule; C-500 Calcium Ascorbate-C, 1 veg capsule. Current labels entered August 2020 and February 2021. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- C-500 PlusAltrum: every row against all products listing it
- C-500 Calcium Ascorbate-CNOW: every row against all products listing it