Comparison

Fast Acting Arginine Complex with Nitrosigine 750 mg and Nitrosigine 750 mg

Fast Acting Arginine Complex with Nitrosigine 750 mg (Doctor's Best) lists 3 distinct ingredients and Nitrosigine 750 mg (Swanson) 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 0.82.

Amount per serving (and % of the Daily Value)
IngredientFast Acting Arginine Complex with Nitrosigine 750 mgNitrosigine 750 mg
Potassium60 mg (1%)30 mg (under 1%)
Arginine silicate inositol1.5 g0.75 g
Calcium93 mg (7%)

Amounts are per serving as DSLD gives them: Fast Acting Arginine Complex with Nitrosigine 750 mg, 2 tablets; Nitrosigine 750 mg, 1 tablet. Current labels entered June 2019 and January 2019. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own