Last reviewed · How we verify

Fluorouracil + folinic acid

Odense University Hospital · Phase 3 active Small molecule

Fluorouracil inhibits thymidylate synthase to block DNA synthesis, while folinic acid enhances its cytotoxic effect by providing reduced folate cofactors.

Fluorouracil inhibits thymidylate synthase to block DNA synthesis, while folinic acid enhances its cytotoxic effect by providing reduced folate cofactors. Used for Colorectal cancer, Gastric cancer, Breast cancer.

At a glance

Generic nameFluorouracil + folinic acid
SponsorOdense University Hospital
Drug classAntimetabolite chemotherapy combination
TargetThymidylate synthase
ModalitySmall molecule
Therapeutic areaOncology
PhasePhase 3

Mechanism of action

Fluorouracil is a pyrimidine antimetabolite that interferes with DNA and RNA synthesis by inhibiting thymidylate synthase, preventing the conversion of dUMP to dTMP. Folinic acid (leucovorin) is a reduced folate that stabilizes the fluorouracil-thymidylate synthase complex, increasing the drug's efficacy and duration of action. This combination is a classic chemotherapy regimen used to enhance cytotoxic activity against rapidly dividing cancer cells.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape: