Comparison
Effer-C and Buffered Vitamin C Powder
Effer-C (Douglas Laboratories) lists 4 distinct ingredients and Buffered Vitamin C Powder (NutriCology) 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 | Effer-C | Buffered Vitamin C Powder |
|---|---|---|
| Vitamin C | 1,175 mg (1306%) | 1,067 mg (1186%) |
| Calcium | 225 mg (17%) | 202 mg (16%) |
| Magnesium | 125 mg (30%) | 107 mg (25%) |
| Potassium | 49.5 mg (1%) | 45 mg (under 1%) |
Amounts are per serving as DSLD gives them: Effer-C, 0.5 tsp; Buffered Vitamin C Powder, 2.35 g. Current labels entered August 2020 and September 2020. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Effer-CDouglas Laboratories: every row against all products listing it
- Buffered Vitamin C PowderNutriCology: every row against all products listing it