Chemotherapy is a chemical substance which is used to provide treatment for the disease of the patients. Nowadays, it is used to make treatment for the disease cancer. It is also called as cytotoxic drugs. During the past days, the term chemotherapy refers to antibiotic which is discovered to provide treatment for syphilis. It is also used for the treatment of autoimmune disease such as multiple sclerosis and rheumatoid arthritis. The remarkable effect of cancer leads to the development of the drug chemotherapy.

The principles and research of the drug for the treatment cancer leads to discovery of the drug chemotherapy. Cancer becomes the uncontrollable disease due to loss of cells and tumours. Due to the overactive immune against the substances and tissues leads to damage of cells. To overcome this disease chemotherapeutic drug was innovated to work with the impairing mitosis to stop the damage of dividing cells. The cytotoxic drug causes damage to the cells. The chemotherapy drug controls cells division and tumours larger amount of targeted cells. It affects the younger tumours and regulates the cell growth effectively.

Sometimes the tumours cells respond less with the chemotherapy drugs. Solid tumours do not respond properly with the chemotherapeutic drugs. To avoid this problem radiation therapy and surgery were used. More number of strategies is used in chemotherapy drug today to provide treatment for the disease cancer. Chemotherapeutic drugs are used in radiation therapy and surgery to solve the other cancer treatments. Chemotherapy drugs are practiced with other different drugs to treat the disease of the patient. Chemotherapy treatment is required for the patient to make him capable for further treatment. It is used to measure the reduction of cancer in the patient.