Drug interactions
Apalutamide + Doravirine
Severity: Contraindicated
Apalutamide and Doravirine: 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 is a strong CYP3A inducer and can markedly lower doravirine plasma concentrations. This may lead to loss of virologic suppression and selection of HIV resistance.
What this interaction means in plain words
Apalutamide and Doravirine 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; Doravirine belongs to Anti Virals.
Why it happens
Apalutamide induces CYP3A4, increasing the metabolism of doravirine, which is a CYP3A substrate.
What to do
Do not coadminister; choose an alternative antiandrogen or antiretroviral regimen without dependence on CYP3A exposure. Allow time for enzyme induction to wane after stopping apalutamide before relying on doravirine.
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 + Elbasvir / grazoprevir Contraindicated
- Apalutamide + Ensitrelvir Contraindicated
- Apalutamide + Fostemsavir Contraindicated
- Apalutamide + Isavuconazonium Contraindicated
Other interactions of Doravirine
- Amobarbital + Doravirine Contraindicated
- Carbamazepine + Doravirine Contraindicated
- Doravirine + Efavirenz Contraindicated
- Doravirine + Enzalutamide Contraindicated
- Doravirine + Mitotane Contraindicated
- Doravirine + Phenobarbitone Contraindicated
Frequently asked questions
Can I take Apalutamide with Doravirine?
MediHelp rates the interaction as contraindicated. Apalutamide and Doravirine 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 is a strong CYP3A inducer and can markedly lower doravirine plasma concentrations. This may lead to loss of virologic suppression and selection of HIV resistance.
How serious is the interaction between Apalutamide and Doravirine?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not coadminister; choose an alternative antiandrogen or antiretroviral regimen without dependence on CYP3A exposure. Allow time for enzyme induction to wane after stopping apalutamide before relying on doravirine.
What other medicines interact with Apalutamide?
MediHelp also lists interactions of Apalutamide with, for example, Cabotegravir, Cobicistat, Elbasvir / grazoprevir. The full list is on the Apalutamide page.
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