Comparison

RxOmega-3 Factors and Ultra Cardio Omega-3 60% Concentration 5:1 EPA/DHA Ratio

RxOmega-3 Factors (Natural Factors) lists 9 distinct ingredients and Ultra Cardio Omega-3 60% Concentration 5:1 EPA/DHA Ratio (Douglas Laboratories) 8 (rows of one ingredient counted once); 8 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 0.93.

Amount per serving (and % of the Daily Value)
IngredientRxOmega-3 FactorsUltra Cardio Omega-3 60% Concentration 5:1 EPA/DHA Ratio
Fat (unspecified)1 g2 g
Saturated fat0 g0 g
DHA200 mg200 mg
EPA (Eicosapentaenoic Acid)400 mg1,000 mg
Omega-3630 mg1,400 mg
Fish Oil1.06 g2.26 g
Polyunsaturated Fat1 g2 g
Monounsaturated Fat0 g0 g
Vitamin E3 IU

Amounts are per serving as DSLD gives them: RxOmega-3 Factors, 1 softgel; Ultra Cardio Omega-3 60% Concentration 5:1 EPA/DHA Ratio, 2 softgels. Current labels entered May 2014 and July 2012. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own