Weight loss pills that work are just hardcore stimulants. By speeding up your heart, it mimics what exercising would have done. DO NOT TAKE THEM. They damage your heart. And the 'better' the weightloss pills, the more damage to your heart they do. Take for example ephedra. It did wonders for people when it came to weightloss, but also killed some high profile athletes. The FDA then decided to ban it.