I found no supp to help with such problemsalso be careful (again BE CAREFUL) when on steroids your muscles will get stronger and if you did not watch it you will end up hurting your joints, rotator cuff, etc...
As i said, i tried noraml/mega doses of:
Cissus
Glucosamine
Chondroitin
MSM
Nothing working for me, so my advice to you is "better be safe than sorry!"