Swanson Selenium 200 mcg (120 capsules) is a dietary supplement that delivers a potent dose of selenium as L‑selenometionine, a highly bioavailable form of this essential trace element. Selenium is a powerful antioxidant that helps protect cells from free radical damage and oxidative stress, supporting cardiovascular, thyroid, immune, and prostate health. Each capsule provides 200 mcg of selenium, contributing to the body’s essential functions and overall wellness. This supplement offers a convenient way to maintain optimal selenium levels and promote long-term cellular and systemic health.