Hello Monica

Slender prevents your body from absorbing 30% of the fat in the foods you eat. It works in your stomach preventing the fat from being absorbed by your body and eliminating it naturally during defecation.

Orlistat blocks the fat that you eat keeping it from being absorbed and converted into fat by your body. Orlistat is recommended to help women and men lose wieght and to help them reduce the risk of regaining weight already lost. Orlistat must be used together with a reduced-calorie diet.