Throwing the dice

I have tried a lot of medications and nothing seems to be working or work for very long. I have tried: Prednisone(still on it) at 30 mg per day, I ahve tied Cellcept worked for little while, tried Methotrexate and had very bad allergic reaction to it, tried and am still on 150 mg per day of Imuran,and it is not showing any signs that it is working, I just finished a three days of IVIg with a result of aseptic menningitis occurring during the third dose. I just left a Rheumatologist in Indy, a Dr. Hague, who suggested I Increase the Imuran, Start Cellcept again and add Rituxan to the mix and start to drop the Prednisone as he believes I have steroid myopathy.
any one have much experience with Rituxan?

I am kind of grasping at straws and continuing to get much weaker.
Thanks in advance for any response!!!