iSupplements
This app turns your iDevice into a portable health and fitness encyclopedia.
It's loaded with detailed information regarding supplements and vitamins. Each entry allows you to find out what the supplement or vitamin is all about, able to do, dosages, side effects, and where or how to obtain. You're also able to learn about 70 popular weight-loss programs, and calculate your BMI. More than 20 fitness, health, and lifestyle guides are available as well.