Comparison
Optimum Absorption Magnesium Glycinate with BioPerine and Magnesium Glycinate with BioPerine
Optimum Absorption Magnesium Glycinate with BioPerine (Mason Natural) lists 2 distinct ingredients and Magnesium Glycinate with BioPerine (NOW) 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.
| Ingredient | Optimum Absorption Magnesium Glycinate with BioPerine | Magnesium Glycinate with BioPerine |
|---|---|---|
| Magnesium | 240 mg (57%) | 200 mg (48%) |
| Black Pepper | 2 mg | 2.5 mg |
Amounts are per serving as DSLD gives them: Optimum Absorption Magnesium Glycinate with BioPerine, 2 capsules; Magnesium Glycinate with BioPerine, 2 capsules. Current labels entered August 2025 and July 2025. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Optimum Absorption Magnesium Glycinate with BioPerineMason Natural: every row against all products listing it
- Magnesium Glycinate with BioPerineNOW: every row against all products listing it