Furmecil 15mg Capsule is a combination chemotherapy medication containing the active constituents Tegafur, Gimeracil, Oteracil. The combination chemotherapy treatment known as S-1 is used to treat various types of cancer, including gastric, colorectal, breast, and pancreatic cancer. This capsule is not recommended for adolescents and children under 18 and may be given alone or in combination with other anticancer drugs.