Mitomycin C is an anti-cancer medication. The medical use of Mitomycin is to treat stomach, colon, pancreas, lung liver, and bladder cancer. Mitomycin injection helps the cancerous cell from growing. The mitomycin 40 mg injection interferes with the development of genetic material in cells and blocks them from dividing into multiple cells. Mitomycin is given in the form of an injection infused into a vein. It has some side effects like fever, tiredness, headaches, bleeding gums, nose bleed, and urine or vomit. Before starting to take the injection, you must consult your doctor and tell them if you are taking any drugs.