Comparison

Alpha Lipoic Acid and R-Lipoic Acid 50 mg

Alpha Lipoic Acid (Nature's Sunshine) lists 2 distinct ingredients and R-Lipoic Acid 50 mg (Source Naturals) 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 0.53.

Amount per serving (and % of the Daily Value)
IngredientAlpha Lipoic AcidR-Lipoic Acid 50 mg
Alpha Lipoic Acid250 mg50 mg
Turmeric40 mg

Amounts are per serving as DSLD gives them: Alpha Lipoic Acid, 2 capsules; R-Lipoic Acid 50 mg, 1 tablet. Current labels entered August 2021 and October 2011. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own