drug therapy against cancer or infections

Chemotherapy, or 'chemo', is the use of chemical substances to treat diseases. The word "chemotherapy" is often used for a type of medicine used to treat cancer. The drugs are cytotoxic, which means they are toxic to the body's cells.[1]

Different drugs used in a chemotherapy against Cancer.
Methotrexate was one of the first drugs used for chemotherapy. It was developed in the 1950s, and is used to treat autoimmune diseases and cancer. It can also be used to treat an ectopic pregnancy, or to perform an abortion.

There are many types of chemotherapy. and doctors chose the medication that will treat each types of cancer in the best way. Often, chemotherapy drugs are combined with each other and with other drugs when a person is treated for cancer.[2]

When a person has surgery to remove a tumor, chemotherapy may be given before or after.

Chemotherapy can also be used to treat other diseases, such as rheumatoid arthritis.

Chemotherapy often has bad side effects:


  1. "Chemotherapy to Treat Cancer - National Cancer Institute". 29 April 2015. Retrieved 29 May 2018.
  2. "What is Cancer? - National Cancer Institute". 17 September 2007. Retrieved 29 May 2018.