Chemotherapy is the use of anti-cancer drugs to treat cancerous cells.
Chemotherapy reaches all parts of the body, not just the cancer cells. A combination of drugs may be used in cycles. Most side effects disappear once treatment is stopped. Treatable Conditions Chemotherapy is the use of powerful, anti-cancer drugs to kill cancer cells. While chemotherapy is effective in treating most types of cancer, there are some forms of the disease for which chemotherapy has not produced the desired results.