Drug interactions
Rifapentine + Sorafenib
Severity: Major
Rifapentine and Sorafenib: major interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Rifapentine is an enzyme inducer and may reduce sorafenib plasma levels, risking loss of efficacy.
What this interaction means in plain words
Rifapentine and Sorafenib can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Rifapentine belongs to Anti Bacterial; Sorafenib belongs to Oncology.
Why it happens
Rifapentine induces CYP3A4 (and likely UGT pathways), increasing sorafenib metabolism.
What to do
Avoid concurrent use if an alternative is available. If necessary, monitor for reduced disease control.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Rifapentine and Sorafenib, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Sorafenib
Other interactions of Rifapentine
- Ledipasvir-sofosbuvir + Rifapentine Contraindicated
- Lorlatinib + Rifapentine Contraindicated
- Lurasidone + Rifapentine Contraindicated
- Ranolazine + Rifapentine Contraindicated
- Rifapentine + Sofosbuvir-velpatasvir Contraindicated
- Rifapentine + Sofosbuvir-velpatasvir-voxilaprevir Contraindicated
Frequently asked questions
Can I take Rifapentine with Sorafenib?
MediHelp rates the interaction as major. Rifapentine and Sorafenib can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Rifapentine is an enzyme inducer and may reduce sorafenib plasma levels, risking loss of efficacy.
How serious is the interaction between Rifapentine and Sorafenib?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use if an alternative is available. If necessary, monitor for reduced disease control.
What other medicines interact with Sorafenib?
MediHelp also lists interactions of Sorafenib with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Sorafenib page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
