Comparison
C-D-Zinc and Cdz
C-D-Zinc (Douglas Laboratories) lists 3 distinct ingredients and Cdz (Quantum Health) 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-D-Zinc | Cdz |
|---|---|---|
| Vitamin C | 800 mg (889%) | 500 mg (556%) |
| Vitamin D | 25 mcg (125%) | 25 mcg (125%) |
| Zinc | 15 mg (136%) | 15 mg (136%) |
Amounts are per serving as DSLD gives them: C-D-Zinc, 1 vegetarian capsule; Cdz, 1 capsule. Current labels entered May 2022 and December 2024. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.