Comparison

L-Carnosine 500 mg with R-Alpha Lipoic Acid and L-Carnosine 500 mg

L-Carnosine 500 mg with R-Alpha Lipoic Acid (Dr. Mercola) lists 2 distinct ingredients and L-Carnosine 500 mg (Vitamin World) 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 0.64.

Amount per serving (and % of the Daily Value)
IngredientL-Carnosine 500 mg with R-Alpha Lipoic AcidL-Carnosine 500 mg
Carnosine500 mg500 mg
Alpha Lipoic Acid150 mg

Amounts are per serving as DSLD gives them: L-Carnosine 500 mg with R-Alpha Lipoic Acid, 2 capsules; L-Carnosine 500 mg, 1 capsule. Current labels entered May 2021 and November 2011. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own