Comparison

Glutathione Precursors and Glutathione 250 mg

Glutathione Precursors (Genestra Brands) lists 4 distinct ingredients and Glutathione 250 mg (ProCaps) 4 (rows of one ingredient counted once); 3 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 0.61.

Amount per serving (and % of the Daily Value)
IngredientGlutathione PrecursorsGlutathione 250 mg
Glycine100 mg50 mg
N-Acetyl Cysteine200 mg150 mg
Glutamic Acid200 mg50 mg
Alpha Lipoic Acid200 mg
Glutathione250 mg

Amounts are per serving as DSLD gives them: Glutathione Precursors, 1 capsule; Glutathione 250 mg, 1 capsule. Current labels entered November 2020 and June 2020. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own