Adipex (phentermine) is a powerful stimulant prescribed for the treatment of obesity in patients of different ages. If you belong to the risk group i.e. have been diagnosed with high cholesterol, high blood pressure or diabetes you may not be able to take this drug safely. Your health care provider will tell you the rest – you are supposed to discuss all the risks and benefits before starting the treatment. There are a number of drugs you are not supposed to combine Adipex with. These include isocarboxazid, rasagiline, selegiline, phenelzine and some other MAO inhibitors. Before you start taking any medicines consult your doctor to learn about the possible drug interactions. Your pharmacist may also provide additional information. If you are not sure about how you are supposed to take this medicine consult your doctor for help.