Comparison

Magnesium Hydroxide and Magnesium Oxide 750 mg

Magnesium Hydroxide (PureBulk.com) lists 1 distinct ingredients and Magnesium Oxide 750 mg (Nutricost) 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)
IngredientMagnesium HydroxideMagnesium Oxide 750 mg
Magnesium417 mg (over 99%)420 mg (100%)

Amounts are per serving as DSLD gives them: Magnesium Hydroxide, 1,000 mg; Magnesium Oxide 750 mg, 1 capsule. Current labels entered June 2013 and August 2017. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own