Supplements
Selenium in supplements · page 7
5,128 supplements on the U.S. market list Selenium with an amount per serving. The official Tolerable Upper Intake Level for adults is 400 mcg a day.
Tolerable Upper Intake Level (UL)
The highest daily amount that is unlikely to cause harm for almost all healthy people, from food, drinks and supplements combined.
| Age | Men | Women |
|---|---|---|
| 0-6 months | 45 mcg | 45 mcg |
| 7-12 months | 60 mcg | 60 mcg |
| 1–3 years | 90 mcg | 90 mcg |
| 4–8 years | 150 mcg | 150 mcg |
| 9–13 years | 280 mcg | 280 mcg |
| 14–18 years | 400 mcg | 400 mcg |
| 19–50 years | 400 mcg | 400 mcg |
| 51+ years | 400 mcg | 400 mcg |
Source: NIH ODS Selenium Fact Sheet for Health Professionals, Table 3 (updated 2025-09-04).
Supplements with Selenium
5,128 shown · page 7 of 107
Label data: NIH Office of Dietary Supplements, Dietary Supplement Label Database (dsld.od.nih.gov), public domain. Upper limits: NIH ODS Fact Sheets for Health Professionals (values from the Institute of Medicine, Food and Nutrition Board).