Cisplatin injection is a chemotherapy medication used to treat a variety of cancers, including testicular, bladder, ovarian, and lung cancer. The drug works by interfering with the growth of cancer cells, which eventually die. It is administered intravenously (IV) over a period of time, usually lasting from 30 minutes to several hours. Common side effects of cisplatin injection include nausea, vomiting, anemia, and kidney damage.