Comparison

OPC - 150 mg Antioxidant 95% and Bilberry + Grapeskin Polyphenols 280 mg

OPC - 150 mg Antioxidant 95% (MicroTech Professional Formulations) lists 4 distinct ingredients and Bilberry + Grapeskin Polyphenols 280 mg (Jarrow Formulas) 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 0.50.

Amount per serving (and % of the Daily Value)
IngredientOPC - 150 mg Antioxidant 95%Bilberry + Grapeskin Polyphenols 280 mg
Grape150 mg200 mg
Bilberrynot disclosed80 mg
Coenzyme Q-10not disclosed
Milk Thistlenot disclosed

Amounts are per serving as DSLD gives them: OPC - 150 mg Antioxidant 95%, 1 capsule; Bilberry + Grapeskin Polyphenols 280 mg, 1 capsule. Current labels entered March 2020 and March 2021. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own