Drug interactions
Enzalutamide + Mavacamten
Severity: Contraindicated
Enzalutamide and Mavacamten: contraindicated 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
Mavacamten is cleared by CYP2C19 and CYP3A4, and enzalutamide induces both, lowering exposure and reducing therapeutic effect on outflow obstruction. Labeling advises against use with strong inducers of these enzymes.
What this interaction means in plain words
Enzalutamide and Mavacamten are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Enzalutamide belongs to Endocrine; Mavacamten belongs to Cardiovascular.
Why it happens
Induction of CYP2C19 and CYP3A4 by enzalutamide increases mavacamten clearance.
What to do
Avoid the combination; if enzalutamide is started or stopped in a mavacamten patient, check LVEF and gradient by echocardiography and adjust the dose.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Enzalutamide and Mavacamten, 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 Enzalutamide
- Doravirine + Enzalutamide Contraindicated
- Elbasvir / grazoprevir + Enzalutamide Contraindicated
- Ensitrelvir + Enzalutamide Contraindicated
- Enzalutamide + Fostemsavir Contraindicated
- Enzalutamide + Isavuconazonium Contraindicated
- Enzalutamide + Lenacapavir Contraindicated
Other interactions of Mavacamten
- Apalutamide + Mavacamten Contraindicated
- Carbamazepine + Mavacamten Contraindicated
- Clarithromycin + Mavacamten Contraindicated
- Dexlansoprazole + Mavacamten Contraindicated
- Efavirenz + Mavacamten Contraindicated
- Eslicarbazepine + Mavacamten Contraindicated
Frequently asked questions
Can I take Enzalutamide with Mavacamten?
MediHelp rates the interaction as contraindicated. Enzalutamide and Mavacamten are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Mavacamten is cleared by CYP2C19 and CYP3A4, and enzalutamide induces both, lowering exposure and reducing therapeutic effect on outflow obstruction. Labeling advises against use with strong inducers of these enzymes.
How serious is the interaction between Enzalutamide and Mavacamten?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination; if enzalutamide is started or stopped in a mavacamten patient, check LVEF and gradient by echocardiography and adjust the dose.
What other medicines interact with Enzalutamide?
MediHelp also lists interactions of Enzalutamide with, for example, Doravirine, Elbasvir / grazoprevir, Ensitrelvir. The full list is on the Enzalutamide 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.
