Holoxan 500mg Injection is used in the treatment of different kinds of cancers. It is given alone or in combination with other chemotherapy medicines, radiotherapy and surgery to treat cancer of blood, breast, lung, ovaries, pancreas, testes, and lymph nodes. Holoxan 500mg Injection is usually given as a slow infusion (drip) into a vein (intravenously) over several hours. 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. It is advised that you drink extra fluids so that you pass more urine. This will help prevent bladder and kidney problems and keep your kidneys working well. The most common side effects of this medicine include nausea, vomiting, anemia (low number of red blood cells), hair loss, decreased white blood cells count. If these bother you or appear serious, let your doctor know. There may be ways of reducing or preventing them. It is very strong medicine and some people may develop serious side effects while taking it. This medicine may lower your ability to fight infections and lead to problems with your blood, liver or kidneys. Before taking it, tell your doctor if you have liver, or kidney problems or are taking any medicines to treat infections. Many other medicines can affect, or be affected by, this medicine so let your doctor know all medications you are using. This medicine is not recommended during pregnancy or while breastfeeding. It may harm your baby. You and your partner should avoid becoming pregnant or fathering a child for several months after your treatment with it has stopped.