Comparison

PS 100 mg and Phosphatidylserine 100 mg

PS 100 mg (Health Resources) lists 1 distinct ingredients and Phosphatidylserine 100 mg (VitaCeutical Labs) 1 (rows of one ingredient counted once); 1 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)
Ingredient	PS 100 mg	Phosphatidylserine 100 mg
Phosphatidylserine	100 mg	100 mg

Amounts are per serving as DSLD gives them: PS 100 mg, 1 capsule; Phosphatidylserine 100 mg, 1 softgel. Current labels entered January 2012 and June 2012. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own

PS 100 mgHealth Resources: every row against all products listing it
Phosphatidylserine 100 mgVitaCeutical Labs: every row against all products listing it