eniluracil/5-FU combination tablet

A combination tablet of ethynyluracil and fluorouracil. Fluorouracil is an antimetabolite fluoropyrimidine analog of the nucleoside pyrimidine with antineoplastic activity. Ethynyluracil is an orally-active fluoropyrimidine analog that inhibits dihydropyrimidine dehydrogenase, the rate-limiting enzyme that catabolizes and inactivates 5-fluorouracil in the liver. This may lead to an increase in the bioavailability and, effectiveness of fluorouracil.