Busulfan is a cancer medication that interferes with the growth and spread of cancer cells in the body. Busulfan is used to treat the symptoms of chronic myelogenous leukemia (a type of blood cancer). Busulfan is not a cure for leukemia. Busulfan may also be used for purposes not listed in this medication guide.
Myleran is a drug that is used to treat the symptoms associated with chronic myelogenous leukemia. Myleran is an alkylating agent which means it prevents the growth and reproduction of certain white blood cells in the body. This process helps the body fight off the leukemia.