These slimming pills have been developed for the sole purpose of helping you lose weight. Typically, prescribed for people who have a BMI of 30 and above the pills can also be prescribed for those who have a BMI of 27 or more and also suffer from associated health conditions such as diabetes, high cholesterol, high blood pressure and heart disease. Its a medication that is tolerated well by most people, but needs to be taken according to the doctors instructions.