Comparison

L-Lysine/L-Proline and L-Proline/L-Lysine 500/500 mg

L-Lysine/L-Proline (Roex) lists 2 distinct ingredients and L-Proline/L-Lysine 500/500 mg (Solgar) 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)
IngredientL-Lysine/L-ProlineL-Proline/L-Lysine 500/500 mg
Lysine225 mg500 mg
Proline400 mg500 mg

Amounts are per serving as DSLD gives them: L-Lysine/L-Proline, 1 capsule; L-Proline/L-Lysine 500/500 mg, 1 tablet. Current labels entered January 2020 and February 2020. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own