Billions: There are billions of dietary supplements, in general they fall into 3 categories. Herbal supplements - which can take the place of some medicines. Vitamins - for nutritional support of your diet. I.E., if you don't get enough nutrients in your diet. Antioxidants and nutritional supplements - these are supplements that support your body's natural functions by adding to what is already happening.
Answered 11/25/2013
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