I've been on prednisone for almost two years, starting with an 80 mg dose and tapering slowly. Because of the dose, I gained over 40 pounds in less than a year. Now that my dosage is much lower (3.5 mg), I've recently start taking phentermine to help kick-start the weight loss process. I quickly noticed that while taking the phentermine that my energy level has increased greatly. After two years of a poor energy level and almost constant fatigue, I suddenly felt closer to my pre-mg self than I have in a long time. Since the phentermine is a limited time thing, I am afraid that I will lose the energy boost. Does anyone here know of any supplements, etc. that will give me the energy boost? Thanks in advance for any suggestions.