Comparison

A.R. Formula and Melatonin Spearmint Flavor

A.R. Formula (Douglas Laboratories) lists 2 distinct ingredients and Melatonin Spearmint Flavor (Dr. Mercola) 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 1.00: the same ingredients, at the amounts in the table below.

Amount per serving (and % of the Daily Value)
IngredientA.R. FormulaMelatonin Spearmint Flavor
Vitamin B60.5 mg (29%)3 mg (176%)
Niacin2 mg (13%)1.5 mg (9%)

Amounts are per serving as DSLD gives them: A.R. Formula, 4 vegetarian capsules; Melatonin Spearmint Flavor, 0.78 ml. Current labels entered October 2012 and August 2013. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own