Comparison

Quercetin Dihydrate plus Vitamin C and Quercetin Plus Vitamin C

Quercetin Dihydrate plus Vitamin C (Puritan's Pride) lists 2 distinct ingredients and Quercetin Plus Vitamin C (Vitamin World) 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)
IngredientQuercetin Dihydrate plus Vitamin CQuercetin Plus Vitamin C
Vitamin C1,400 mg (1556%)1,400 mg (1556%)
Quercetin500 mg500 mg

Amounts are per serving as DSLD gives them: Quercetin Dihydrate plus Vitamin C, 2 capsules; Quercetin Plus Vitamin C, 2 capsules. Current labels entered February 2023 and April 2013. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own