I am starting to take Selenium 200 mcg, Vitamin C powder 1/2 tsp 2 or 3 times a day, & Magnesium. 500 mg. Now I know everyone says ask your doctor, but when I asked my doctor about supplements his answer was if you want to waste your money go ahead, so that is of no help to me. I have low thyroid, High Blood Pressure, High Cholesterol, and take probiotic, and a stomach pill which is pantoprazole which does not help me. Also, iron for anemia due to AVM's, and fish oil pill. Sounds like a lot but even though I think I eat right I don't know if I'm getting the right amounts of minerals or vitamins in my body. So hope someone will help since my doctor doesn't believe in supplements.