Comparison

Evening Primrose Oil 500 mg Cold-Pressed and Evening Primrose Oil 500 mg

Evening Primrose Oil 500 mg Cold-Pressed (Quest) lists 4 distinct ingredients and Evening Primrose Oil 500 mg (Nature's Harmony) 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.

Amount per serving (and % of the Daily Value)
IngredientEvening Primrose Oil 500 mg Cold-PressedEvening Primrose Oil 500 mg
Vitamin E14.9 IU10 mg (67%)
Linoleic Acid360 mg360 mg
Gamma Linolenic Acid50 mg50 mg
Evening Primrose500 mg500 mg

Amounts are per serving as DSLD gives them: Evening Primrose Oil 500 mg Cold-Pressed, 3 softgels; Evening Primrose Oil 500 mg, 0 softgels. Current labels entered July 2013 and May 2013. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own