Supplementation can help meet the higher nutritional needs of your demanding life style or medical health condition. Your body may have a greater need for certain vitamins or minerals due to medical issues, stress or a sedentary lifestyle. There are many forms of nutritional supplements, including tablets, capsules, powders, drinks, and energy bars. Many people believe that diet supplements boost energy levels, strength, performance as well as prevent deficiencies in nutrition and improve overall well-being.