Quick Summary
Speaking scientific English, phentermine, or, being more specific - Oral Phentermine Hydrochloride (HCL), is a phenethylamine (sympathomimetic family) used as an appetite suppressant in conjunction with diet, exercise, and behavior therapy for the short-term management of exogenous obesity.
In plain English this means that phentermine is a fast and effective way to get rid of extra pounds (or kilograms, whatever you prefer) in short term with no need for extra efforts than carefully following the doctor or pharmacist-provided instructions (as well as the ones given below) and combining the phentermine-based obesity treatment course with the diet, exercise and behavior therapy which I assume you have already got used to. You should also remember that not only Phentermine, but your lively faith and strong will are the primary keys to success on the way to the effective weight loss!