Phentermine works! I did virtually nothing but take the phentermine in the beginning and lost about 15 pounds in a month. I did not gain it back either. I was just looking for the easy way out at the time though. With just diet, exercise, and drinking plenty of water (in fact nothing but water) I lost 6 pounds in 5 days. It just goes to show that when you motivate yourself and stick to the absolute right thing to do then you cannot go wrong at all.