I can’t tell you the answer as I have not taken any diet pills before.  But I do heard from friends and even some celebrities claimed diet pills that actually work.  My type of dieting is exercises and watch what you eat. You are what you eat.  What is the point when you spent a large sum of money eating one heap mountain of food and the next minute spending another heap of money buying diet pills?  So if you want to loose some weight, first and foremost, reduce your food intake.