Taking doses above 400 mcg can increase the risk of developing selenium toxicity. Selenium is also a potent antioxidant and may lower oxidative stress. Vitamin A (as Beta-Carotene) 800mcg, Vitamin C 60mg, Vitamin E 10mg, Selenium 200mcg Other Ingredients: Dicalcium Phosphate, Microcrystalline Cellulose, Magnesium Stearate.