Stay away from that shit, Prednisone is a steroid but not an anabolic one. It's used as an anti-inflammatory and has horrid side effects. It causes bloating, massive weight gain, a never subsididing appetite and those are the temporary sides. It basically ages your body prematurely and can cause cateracts, bone loss, joint problems, etc... I had to take it for 2 months and hated every minute of it. I put on a lot of weight because controlling your appetite is not an option.
So the answer is stay the hell away from it. Steroids do not automatically mean anabolic.