what is imuran used to treat
Azathioprine lowers your body's immune system. The immune system helps your body fight infections. The immune system can also fight or reject a transplanted organ such as a liver or kidney. This is because the immune system treats the new organ as an invader. Azathioprine is used to prevent your body from rejecting a transplanted kidney. It is also used to treat symptoms of rheumatoid arthritis. Azathioprine may also be used for purposes not listed in this medication guide.