Clenbuterol is a popular product that they claim will help you to lose more weight and achieve the greater benefits that you are looking for. With Clenbuterol, you get a substance that has been seen all over various discussion boards, and there are many claiming that it provides extreme fat burning results. This being said, it was used first in horses as a treatment for asthma. Some noticed that said horses were losing some weight and started using it in humans. It showed tremendous weight loss results. However, it also showed tremendous side effects. Some were even life threatening. This being said, Clenbuterol was never made to be used in humans, and since then, its use has again been delegated only for horses. It has been banned for human use.