Thing is though Xenical arent a miracle pill, all theyll do is help you. They wont lose the weight for you, they WILL encourage you to keep to a low fat, healthier eating plan and THAT will cause you to lose weight.
Just dont get disheartened if you dont see big losses, a lot of doctors really dont seem to explain how they work when they prescribe them.
If your diet is already low in fat you may not have any side effects at all - I didnt