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.
Azasan (Azathioprine), an immunosuppressive drug belongs to the pharmacological class of purine antimetabolite, is often prescribed in various organ transplantation and autoimmune diseases. Available as a pro-drug, it is rapidly converted to mercaptopurine which then acts by inhibiting an enzyme required for DNA synthesis. It lowers body immune function by suppressing the proliferation of T and B lymphocytes. Azasan is an oral prescription drug that belongs to Category D, hence it shows significant teratogenic effect and is not safe to be administered during pregnancy.