21st Century, Selenium, 200 mcg, 60 Capsules

21st Century Selenium delivers 200 mcg of this essential trace mineral in a bioavailable capsule format optimized for absorption. Selenium functions as a critical cofactor for selenoprotein synthesis, including glutathione peroxidase and thioredoxin reductase enzymes fundamental to cellular antioxidant defense and oxidative stress mitigation. This micronutrient supports thyroid hormone metabolism, immune cell differentiation, and reproductive health. The 60-capsule supply provides a two-month protocol with convenient once-daily dosing alongside meals. Laboratory-verified for purity and potency with gluten-free certification, this formulation addresses selenium insufficiency common in certain geographic regions and dietary patterns while supporting comprehensive antioxidant and metabolic wellness.