Xenical–Orlistat is the prescription medication which is developed for helping the obese people lose their weight if appropriately combined with low-calories diet and exercise plans as recommended by the qualified physicians. When taken Xenical–Orlistat helps weight loss by stopping the digestion and absorption of fats in the foods consumed. The enzymes in the intestine known as lipase which is originally produced in the pancreas splits the fat from the food enabling it to be absorbed into the body. Xenical-Orlistat obstructs lipase function for stopping the split and absorption of fats.

The absorbed fat is expelled through the stool. It could also be used for averting weight regain after losing it. The persons having their BMI of 30 and above are usually prescribed Xenical–Orlistat. However, if other risk factors based on tests for arteriosclerosis are present like high blood pressure or hypertension, diabetes and increased cholesterol or triglyceride levels in the blood in the people having BMI of 27 or above are also prescribed this medication.

Several dietary vitamins like A, D, E and beta – carotene joins with the fats and they do not absorb and are eradicated with the stools in substantial quantities along with the fats when Xenical–Orlistat is taken. Hence the patients who are taking Xenical–Orlistat should also take multivitamins that are with fat soluble vitamins for ascertaining that sufficient quantum of the vitamins are available for absorption. For ensuring that the vitamins present in the multivitamins are not attached to fats like the vitamins in the diet, the multivitamins should be taken at least a couple of hours before or after a few hours of ingesting Xenical–Orlistat.