Vitamin Mistakes Most People Make

 You take a dose that’s too high. It can be detrimental to your health to take high doses of vitamin A and vitamin E. Reasons: Taking more than 3,000 international units (IU) of vitamin A (retinol) daily can increase your risk for osteoporosis, the bone-eroding disease. Vitamin E actually is a family of eight compounds called tocopherols and ­tocotrienols. Alpha-tocopherol—the compound commonly found in multivitamins—can be toxic in doses higher than 100 IU daily.