Comparison
Yeast-Free Selenium and Selenium 200 mcg
Yeast-Free Selenium (SuperiorLabs) lists 2 distinct ingredients and Selenium 200 mcg (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 | Yeast-Free Selenium | Selenium 200 mcg |
|---|---|---|
| Selenium | 200 mcg (364%) | 200 mcg (364%) |
| Selenomethionine | 40,000 mcg | 40,000 mcg |
Amounts are per serving as DSLD gives them: Yeast-Free Selenium, 1 vegetarian capsule; Selenium 200 mcg, 1 veg capsule. Current labels entered October 2021 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
- Yeast-Free SeleniumSuperiorLabs: every row against all products listing it
- Selenium 200 mcgNOW: every row against all products listing it