Chemotherapy is designed to kill fast-growing cancer cells anywhere in the body so it is often used when aggressive prostate cancer cells metastasize to other body sites. Usually, chemotherapy is given through a special intravenous line in a series of treatments over several months. There have been new advances in both the hormonal and chemotherapy treatment of prostate cancer. Unfortunately, chemotherapy often kills other fast-growing body cells like hair cells, mucosal cells, and cells that line the gastrointestinal tract. This can result in side effects of hair loss, mouth sores, nausea, vomiting, and other body ailments.