Buying Reductil Online is a brand name of the medication sibutramine, which was used as an appetite suppressant to aid in weight loss. The drug works by affecting chemicals in the brain that control appetite and food cravings. It comes in 15mg. As a result, Reductil is no longer available for prescription or use. It is important to note that any weight loss medication should only be used under the guidance and supervision of a healthcare provider.