Comparison

L-Proline and 100% Pure L-Proline

L-Proline (PureBulk.com) lists 1 distinct ingredients and 100% Pure L-Proline (NutraBio) 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)
IngredientL-Proline100% Pure L-Proline
Proline2,000 mg2,000 mg

Amounts are per serving as DSLD gives them: L-Proline, 2,000 mg; 100% Pure L-Proline, 2 g. Current labels entered June 2013 and September 2015. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own