Chemotherapy is a treatment that uses chemicals to kill cancer cells. It usually acts by preventing cancer cells from growing, dividing, or proliferating. Chemotherapy has a greater effect on cancer cells because they grow and divide quicker than normal cells. Chemotherapy medications, on the other hand, are potent, and they can still harm healthy cells. The side effects are caused by this injury. Chemotherapy is used in a variety of methods by doctors at various times.