Capecitabine is a cancer medication that interferes with the growth of cancer cells and slows their spread in the body. Capecitabine is used to treat breast cancer and colon or rectum cancer that has spread to other parts of the body. Capecitabine is often used in combination with other cancer medications and/or radiation treatments. Capecitabine may also be used for purposes not listed in this medication guide.
Capecitabine belongs to a class of chemotherapy drugs referred to as anti-metabolites. It prevents the cells from making RNA and DNA, which stops the growth of cancer cells. In the body, Capecitabine is changed to a substance known as 5-fluorouracil, making the most active part of the drug targeted for the cancerous tumor.