If you are wondering why people choose Phentermine over all other diet pills in the market, this is simply because it is backed by scientific research and is FDA approved. That means it really works and is safe to use. Phentermine is a weight loss pill for short term use only; you won’t need to take it for a prolonged period of time just to see results. Try Phentermine so you can see for yourself why people favor it as a diet product.