Some of the most used diet pills are Phen375, Meratol, Capsiplex and Unique Hoodia. However, it is not guaranteed that these pills will work for you since people have different body metabolisms. I would advice you to use other methods to lose weight like exercise and dieting.
Try Prescopodene. I lost 15 kilos in three months time. Try researching on it first or better yet, ask a doctor with regards to it's ingredients. That's how I got the bottles and that's also how I lost those amount of weights.