Comparison

Lecithin 500 and Soy Lecithin 520 mg

Lecithin 500 (GNC) lists 1 distinct ingredients and Soy Lecithin 520 mg (Puritan's Pride Premium) 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	Lecithin 500	Soy Lecithin 520 mg
Lecithin	500 mg	520 mg

Amounts are per serving as DSLD gives them: Lecithin 500, 1 softgel capsule; Soy Lecithin 520 mg, 1 softgel. Current labels entered October 2012 and April 2017. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own

Lecithin 500GNC: every row against all products listing it
Soy Lecithin 520 mgPuritan's Pride Premium: every row against all products listing it