Mitomycin 40mg Injection is utilized in the treatment of certain kinds of cancer of pancreas, breast, lung, and stomach. It can be utilized alone or in mix with some medications as part of mix chemotherapy. It works by interfering with the growth of cancer cells, which are eventually destroyed. Mitomycin 40mg Injection is given as an injection into vein under the supervision of a doctor and should not be self-administered. Your doctor will decide what dose is necessary and how often you need to take it. This will depend on what you are being treated for and may change from time to time. You should take it exactly as your doctor has advised. Taking it in the wrong way or taking too much can cause very serious side effects. It may take several weeks or months for you to see or feel the benefits but do not stop taking it unless your doctor tells you to. The most common side effects of this medication include anemia (low number of red blood cells), decreased white blood cell count, increased bleeding tendency, loss of appetite, nausea, and vomiting. If these bother you or appear serious, let your doctor know. There may be ways of reducing or preventing them.