Drug interactions
Enzalutamide + Lonafarnib
Severity: Contraindicated
Enzalutamide and Lonafarnib: 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
Lonafarnib is a sensitive CYP3A4 substrate, and enzalutamide's strong induction is expected to cut its exposure considerably. This could reduce efficacy, and labeling advises against strong or moderate inducers.
What this interaction means in plain words
Enzalutamide and Lonafarnib 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; Lonafarnib belongs to Miscellaneous.
Why it happens
CYP3A4 induction by enzalutamide increases lonafarnib metabolism.
What to do
Avoid the combination and seek an alternative antiandrogen. Monitor clinical response closely if it cannot be avoided.
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 Enzalutamide
- Doravirine + Enzalutamide Contraindicated
- Elbasvir / grazoprevir + Enzalutamide Contraindicated
- Ensitrelvir + Enzalutamide Contraindicated
- Enzalutamide + Fostemsavir Contraindicated
- Enzalutamide + Isavuconazonium Contraindicated
- Enzalutamide + Lenacapavir Contraindicated
Other interactions of Lonafarnib
- Alfuzosin + Lonafarnib Contraindicated
- Amobarbital + Lonafarnib Contraindicated
- Apalutamide + Lonafarnib Contraindicated
- Bosentan + Lonafarnib Contraindicated
- Carbamazepine + Lonafarnib Contraindicated
- Clarithromycin + Lonafarnib Contraindicated
Frequently asked questions
Can I take Enzalutamide with Lonafarnib?
MediHelp rates the interaction as contraindicated. Enzalutamide and Lonafarnib 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. Lonafarnib is a sensitive CYP3A4 substrate, and enzalutamide's strong induction is expected to cut its exposure considerably. This could reduce efficacy, and labeling advises against strong or moderate inducers.
How serious is the interaction between Enzalutamide and Lonafarnib?
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 and seek an alternative antiandrogen. Monitor clinical response closely if it cannot be avoided.
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.
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