Comparison

Natural C-500 with Rose Hips and Sustained Release Vitamin C-500 With Rose Hips

Natural C-500 with Rose Hips (21st Century) lists 2 distinct ingredients and Sustained Release Vitamin C-500 With Rose Hips (Windmill) 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.

Amount per serving (and % of the Daily Value)
IngredientNatural C-500 with Rose HipsSustained Release Vitamin C-500 With Rose Hips
Vitamin C500 mg (556%)500 mg (556%)
Rose (unspecified)37 mg30 mg

Amounts are per serving as DSLD gives them: Natural C-500 with Rose Hips, 1 tablet; Sustained Release Vitamin C-500 With Rose Hips, 1 tablet. Current labels entered July 2012 and March 2012. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own