Oncosid 100mg Injection is used to treat different cancers of lung, and testicles. It is also sometimes used to treat some other kinds of cancer in both men and women. It can be used on its own, or sometimes given together with certain other medicines as part of combination chemotherapy. Oncosid 100mg Injection is given as slow infusion into veins under the supervision of a healthcare professional 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 effect of this medicine includes low blood platelets, vomiting, nausea, hair loss, and anemia (low number of red blood cells). If these bother you or appear serious, let your doctor know. There may be ways of reducing or preventing them. It is important to use effective contraception to avoid getting pregnant or fathering a child during treatment. Before taking this medicine, let your doctor know if you have liver or kidney disease, or if have been on radiation therapy. Your doctor should also know about all other medicines you are taking as many of these may make this medicine less effective or change the way it works. Tell your doctor if you are pregnant or breastfeeding. Your doctor may check you for blood cells and liver functioning while taking this medicine.