Ecoslim is a brand name for a capsule with the generic name Orlistat 120mg. Ecoslim blocks some of the fat that you eat, keeping it from being absorbed by your body, It is used together with a reduced-calorie diet and weight maintenance to treat obesity in people with certain risk factors. It is indicated for use to stop weight gain in patients with weight related conditions. Ecoslim has been said to be effective in preventing weight gain when combined with the required diet.