Ingredient

Selenomethionine

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Source
Not animal-derived
Allergen
No
Role in food
Selenomethionine is added to foods as a source of selenium, an essential nutrient. It …

What it is

Selenomethionine is a form of the essential mineral selenium. It is an amino acid where selenium replaces sulfur. It can be produced through chemical synthesis or fermentation processes.

Why it's used

Selenomethionine is added to foods as a source of selenium, an essential nutrient. It is often found in dietary supplements, fortified foods like energy bars, and beverages.

Health notes

Selenomethionine is recognized as safe (GRAS) by the FDA when used as a nutrient supplement. Selenium is important for thyroid function and acts as an antioxidant. JECFA has evaluated selenium and its compounds, establishing guidelines for their use. Evidence does not suggest adverse effects from typical dietary intakes of selenium.

Allergen info

Not a major allergen. It is not derived from any of the nine FDA major allergens.

Products containing Selenomethionine

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Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.