Comparison

Oil of Evening Primrose 1000 mg and Evening Primrose Oil 1,300 mg

Oil of Evening Primrose 1000 mg (Trader Darwin's) lists 4 distinct ingredients and Evening Primrose Oil 1,300 mg (Vitamer Laboratories) 3 (rows of one ingredient counted once); 3 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 0.84.

Amount per serving (and % of the Daily Value)
IngredientOil of Evening Primrose 1000 mgEvening Primrose Oil 1,300 mg
Fat (unspecified)1 g1 g
Polyunsaturated Fat1 g1 g
Evening Primrose oil1,000 mg1,300 mg
Vitamin E27 IU

Amounts are per serving as DSLD gives them: Oil of Evening Primrose 1000 mg, 1 softgel; Evening Primrose Oil 1,300 mg, 1 softgel. Current labels entered May 2017 and December 2016. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own