Vitamins and minerals
Selenium
Trace mineral involved in thyroid metabolism and antioxidant enzymes.
Established nutritional role
About this ingredient
Selenium is needed in small amounts. Excess intake can cause toxicity. This nutrient role does not establish a treatment for thyroid disease or cancer.
Mineral supportThyroid wellbeing
Questions and answers
Where is this ingredient listed?
The linked products below list this ingredient or a named form of it. Open the product for its current ingredient panel and available options.
Can I apply a study directly to a product containing this ingredient?
Check the species, plant part, preparation, amount and study population. An ingredient reference is not a trial of every finished product containing it.
Read the original sources
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Sources checked 11 November 2026.