Drug interactions
Enzalutamide + Sofosbuvir-velpatasvir
Severity: Major
Enzalutamide and Sofosbuvir-velpatasvir: major interaction.
Last updated Sources: US FDA label
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
Enzalutamide is a strong CYP3A4 inducer and also affects CYP2C8 and P-gp, so it may markedly reduce velpatasvir and sofosbuvir exposure. Loss of antiviral efficacy and treatment failure are possible.
What this interaction means in plain words
Enzalutamide and Sofosbuvir-velpatasvir 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.
Enzalutamide belongs to Endocrine; Sofosbuvir-velpatasvir belongs to Anti Virals.
Why it happens
Enzalutamide induces CYP3A4, CYP2C8 and P-gp, accelerating clearance of velpatasvir and sofosbuvir.
What to do
Avoid the combination; defer HCV treatment until enzalutamide is finished or seek specialist input on alternatives. If unavoidable, monitor HCV RNA closely.
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 Enzalutamide and Sofosbuvir-velpatasvir, 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 7 days on the web. No card needed.
References
Other interactions of Sofosbuvir-velpatasvir
- Rifampin + Sofosbuvir-velpatasvir Contraindicated
- Rifapentine + Sofosbuvir-velpatasvir Contraindicated
- Sofosbuvir-velpatasvir + St john's wort Contraindicated
- Amiodarone + Sofosbuvir-velpatasvir Major
- Apalutamide + Sofosbuvir-velpatasvir Major
- Carbamazepine + Sofosbuvir-velpatasvir Major
Other interactions of Enzalutamide
- Doravirine + Enzalutamide Contraindicated
- Elbasvir / grazoprevir + Enzalutamide Contraindicated
- Ensitrelvir + Enzalutamide Contraindicated
- Enzalutamide + Fostemsavir Contraindicated
- Enzalutamide + Isavuconazonium Contraindicated
- Enzalutamide + Lenacapavir Contraindicated
Frequently asked questions
Can I take Enzalutamide with Sofosbuvir-velpatasvir?
MediHelp rates the interaction as major. Enzalutamide and Sofosbuvir-velpatasvir 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. Enzalutamide is a strong CYP3A4 inducer and also affects CYP2C8 and P-gp, so it may markedly reduce velpatasvir and sofosbuvir exposure. Loss of antiviral efficacy and treatment failure are possible.
How serious is the interaction between Enzalutamide and Sofosbuvir-velpatasvir?
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 the combination; defer HCV treatment until enzalutamide is finished or seek specialist input on alternatives. If unavoidable, monitor HCV RNA closely.
What other medicines interact with Sofosbuvir-velpatasvir?
MediHelp also lists interactions of Sofosbuvir-velpatasvir with, for example, Rifampin, Rifapentine, St john's wort. The full list is on the Sofosbuvir-velpatasvir 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.
