Essential Trace Mineral.
NUTRITIONALLY ESSENTIAL MICRONUTRIENT: Selenium is a micronutrient that plays a vital role in many physiological functions. Zhou Selenium 200 mcg - 100 Veggie Capsules SUPERIOR ABSORPTION: Zhou Nutrition's Yeast Free Selenium comes in the form of Selenomethionine which has been shown to provide superior absorption over other forms of Selenium. SUPPORTS THYROID, HEART, AND MORE: Selenium fights off free radicals, supports a healthy thyroid, prostate & heart function.