Selenium
Strong evidenceAlso known as: selenomethionine
A trace mineral; the selenomethionine form is well absorbed. Daily needs are measured in micrograms.
What it is used for
Contributes to normal thyroid function and to the protection of cells from oxidative stress.
Dosage
55–200 µg daily. Do not exceed 400 µg without advice.
Safety notes
Do not exceed 400 µg daily. Excessive doses are toxic.