Years ago I did get a lot of energy while on steroids. My father and son both had very extreme reactions to prednisone also. I was recently violently ill with a severe allergic reaction and at first ER visit, they refused to give me prednisone due to mania triggering. They prescribed a steroid alternative and I was back in the ER a few days later, much worse with giant hives all over. They decided we had to do prednisone (I was going to demand it anyways) and I took a short course, beginning at 40mg's. I was so sick, that I think it kept mania at bay. Prednisone usually works FAST, but in my case, I remained very sick, well into the taper phase. Please keep an eye on things and take care of yourself. (((Hugs)))