I will say that it doesn't work. I remember seeing the hydroxy cut commercials on tv and the models saying they lost all this weight. Later I remember seeing a commercial for anyone who needed a lawyer because of the harmful effects from it. Diet pills are over 99% ineffective and when they do help people lose weight, the side effects are usually very dangerous.
Ultimately nothing can replace exercising and eating right, which only fails when there's a lack of commitment.