Orlistat, marketed as a prescription under the trade name Xenical or over-the-counter as Alli, is a drug designed to promote weight loss by preventing the absorption of fats from the diet. In a new study published in the January 25, 2010 issue of Archives of Internal Medicine, researchers report that eating a low carbohydrate diet leads to similar improvements in weight loss as orlistat combined with a low fat diet.

Low Carb Diet Just as Effective as Low Carb Diet Just as Effective as Medications for Weight Loss