Drug interactions
Apalutamide + Mavacamten
Severity: Contraindicated
Apalutamide 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
Apalutamide can substantially reduce mavacamten exposure, which may result in loss of therapeutic effect on left ventricular outflow obstruction. Stopping the inducer later can also cause exposure to rise unexpectedly.
What this interaction means in plain words
Apalutamide 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.
Apalutamide belongs to Endocrine; Mavacamten belongs to Cardiovascular.
Why it happens
Apalutamide induces CYP2C19 and CYP3A4, the main enzymes that metabolize mavacamten.
What to do
Avoid the combination; use an alternative to apalutamide. Monitor echocardiographic response if the inducer is started or stopped.
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?
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Other interactions of Apalutamide
- Apalutamide + Cabotegravir Contraindicated
- Apalutamide + Cobicistat Contraindicated
- Apalutamide + Doravirine Contraindicated
- Apalutamide + Elbasvir / grazoprevir Contraindicated
- Apalutamide + Ensitrelvir Contraindicated
- Apalutamide + Fostemsavir Contraindicated
Other interactions of Mavacamten
- Carbamazepine + Mavacamten Contraindicated
- Clarithromycin + Mavacamten Contraindicated
- Dexlansoprazole + Mavacamten Contraindicated
- Efavirenz + Mavacamten Contraindicated
- Enzalutamide + Mavacamten Contraindicated
- Eslicarbazepine + Mavacamten Contraindicated
Frequently asked questions
Can I take Apalutamide with Mavacamten?
MediHelp rates the interaction as contraindicated. Apalutamide 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. Apalutamide can substantially reduce mavacamten exposure, which may result in loss of therapeutic effect on left ventricular outflow obstruction. Stopping the inducer later can also cause exposure to rise unexpectedly.
How serious is the interaction between Apalutamide 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; use an alternative to apalutamide. Monitor echocardiographic response if the inducer is started or stopped.
What other medicines interact with Apalutamide?
MediHelp also lists interactions of Apalutamide with, for example, Cabotegravir, Cobicistat, Doravirine. The full list is on the Apalutamide page.
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