Comparison
MSM and MSM 500
MSM (Oregon Health) lists 2 distinct ingredients and MSM 500 (ProCaps Laboratories) 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 | MSM | MSM 500 |
|---|---|---|
| Vitamin C | 60 mg (67%) | 50 mg (56%) |
| Methylsulfonylmethane | 800 mg | 500 mg |
Amounts are per serving as DSLD gives them: MSM, 1 capsule; MSM 500, 1 capsule. Current labels entered October 2014 and May 2020. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.