Comparison

Melatonin With St. John's Wort and St. John's Wort Extract Extra Strength

Melatonin With St. John's Wort (Vitamin World) lists 3 distinct ingredients and St. John's Wort Extract Extra Strength (Enzymatic Therapy) 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 0.62.

Amount per serving (and % of the Daily Value)
IngredientMelatonin With St. John's WortSt. John's Wort Extract Extra Strength
Carbohydrate1 g1 g
St. John's Wort900 mg450 mg
Melatonin3 mg

Amounts are per serving as DSLD gives them: Melatonin With St. John's Wort, 3 capsules; St. John's Wort Extract Extra Strength, 1 tablet. Current labels entered April 2013 and September 2013. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own