Regorafenib (Specialist drug)
Brand names: Stivarga
Regorafenib is an oral multikinase inhibitor used as a specialist treatment in metastatic colorectal cancer, gastrointestinal stromal tumour and hepatocellular carcinoma.
Adult dose
Dose auto-extracted from US FDA prescribing information (openFDA / DailyMed) — cross-check; US labelling may differ from UK — not yet clinician-verified. Always confirm against the product SmPC and your local formulary before prescribing.
Contraindications
- None — section 4 of the US label states 'None'
Side effects
- Hand-foot skin reaction (palmar-plantar erythrodysaesthesia)
- Asthenia/fatigue
- Diarrhoea
- Hypertension
- Pain (including gastrointestinal and abdominal pain), decreased appetite/food intake, infection, dysphonia, hyperbilirubinaemia, fever, mucositis, weight loss, rash and nausea (all >= 20%)
- Serious: hepatotoxicity, haemorrhage, gastrointestinal perforation or fistula, cardiac ischaemia and infarction, reversible posterior leukoencephalopathy syndrome
Interactions
- Strong CYP3A4 inducers (e.g. rifampin, phenytoin, carbamazepine, phenobarbital, St John's Wort) — avoid; they decrease regorafenib plasma concentrations and may lead to decreased efficacy
- Strong CYP3A4 inhibitors (e.g. clarithromycin, grapefruit juice, itraconazole, ketoconazole, nefazodone, posaconazole, telithromycin, voriconazole) — avoid; they increase regorafenib plasma concentrations and may lead to increased toxicity
- BCRP substrates — monitor patients closely for symptoms of increased exposure to the BCRP substrate
Clinical monograph
How it works
It inhibits multiple kinases involved in tumour angiogenesis, oncogenesis and the tumour microenvironment, including VEGFR, KIT and RAF kinases.
Prescribing in practice
- Severe and sometimes fatal hepatotoxicity can occur, so liver function must be checked before and frequently during the early weeks of treatment.
- Hand-foot skin reaction and hypertension are common and may require dose modification.
- Initiation is restricted to specialist oncology services familiar with multikinase inhibitor toxicity.
Monitoring
Monitor liver function tests, blood pressure and the skin (particularly palms and soles) regularly, especially early in treatment.
Counselling the patient
- Report yellowing of the skin or eyes, dark urine or unusual tiredness promptly.
- Tell the team about painful, blistering or peeling skin on the hands or feet.
- Attend for regular blood pressure and blood test checks.
Evidence & guidelines
Use is supported by NICE guidance and pivotal trials including the CORRECT study in colorectal cancer.
Reference: NICE TA866/TA678; SmPC; Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. The structured dose values shown have been reviewed by a clinician. Monograph status: clinician-reviewed (2026-07-04).
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