Comparison
OptiMSM and Fundamental Sulfur Powder
OptiMSM (SuperSmart) lists 1 distinct ingredients and Fundamental Sulfur Powder (Douglas Laboratories) 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.
| Ingredient | OptiMSM | Fundamental Sulfur Powder |
|---|---|---|
| Methylsulfonylmethane | 8,000 mg | 5,000 mg |
Amounts are per serving as DSLD gives them: OptiMSM, 8 g; Fundamental Sulfur Powder, 5 g. Current labels entered June 2025 and July 2012. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- OptiMSMSuperSmart: every row against all products listing it
- Fundamental Sulfur PowderDouglas Laboratories: every row against all products listing it