Swanson Selenium 200mcg

Swanson Selenium 200 mcg is a premium single-nutrient trace mineral supplement engineered to deliver robust cellular antioxidant defense, facilitate healthy thyroid hormone synthesis, and support systemic immunity. Selenium serves as an essential building block for selenoproteins and endogenous antioxidant enzymes, most notably glutathione peroxidase, which neutralizes free radicals and shields cellular membranes, cardiovascular structures, and prostate tissues from oxidative damage. The thyroid gland maintains the body's highest concentration of selenium, where the mineral acts as a cofactor for deiodinase enzymes responsible for converting inactive thyroid hormone ($T_4$) into its active metabolic form ($T_3$). Formulated in bioavailable, organically bound forms (such as L-Selenomethionine or chelated Selenium Glycinate), Swanson Selenium supports daily metabolic equilibrium, reproductive vitality, and immune function.

Adults: Take 1 capsule daily with a meal and a full glass of water, or as directed by a healthcare professional.


• Administration: Swallow whole with water; do not chew.


• Precautions: Do not exceed the recommended daily dose. Consult a healthcare provider prior to use if pregnant, nursing, taking prescription medications, or under medical supervision.

Active Nutrient: Selenium (as L-Selenomethionine or Albion® Selenium Glycinate Complex, 200 µg [364% DV]).


Excipients & Base: Rice flour / microcrystalline cellulose, dicalcium phosphate, gelatin capsule shell, magnesium stearate, silica.