Drug interactions
Doravirine + Rifampicin
Severity: Contraindicated
Doravirine and Rifampicin: 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
Rifampicin markedly reduces doravirine concentrations, which may lead to loss of antiviral efficacy and resistance. The combination is contraindicated in labeling.
What this interaction means in plain words
Doravirine and Rifampicin 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.
Doravirine belongs to Anti Virals; Rifampicin belongs to Anti Bacterial.
Why it happens
Rifampicin strongly induces CYP3A4, increasing doravirine clearance.
What to do
Do not use together. Use an alternative TB regimen, such as rifabutin with a doravirine dose increase per labeling, or change the antiretroviral regimen.
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 Doravirine
- Amobarbital + Doravirine Contraindicated
- Apalutamide + Doravirine Contraindicated
- Carbamazepine + Doravirine Contraindicated
- Doravirine + Efavirenz Contraindicated
- Doravirine + Enzalutamide Contraindicated
- Doravirine + Mitotane Contraindicated
Other interactions of Rifampicin
- Cabotegravir + Rifampicin Contraindicated
- Delamanid + Rifampicin Contraindicated
- Ensitrelvir + Rifampicin Contraindicated
- Fostemsavir + Rifampicin Contraindicated
- Isavuconazole + Rifampicin Contraindicated
- Isavuconazonium + Rifampicin Contraindicated
Frequently asked questions
Can I take Doravirine with Rifampicin?
MediHelp rates the interaction as contraindicated. Doravirine and Rifampicin 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. Rifampicin markedly reduces doravirine concentrations, which may lead to loss of antiviral efficacy and resistance. The combination is contraindicated in labeling.
How serious is the interaction between Doravirine and Rifampicin?
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 use together. Use an alternative TB regimen, such as rifabutin with a doravirine dose increase per labeling, or change the antiretroviral regimen.
What other medicines interact with Doravirine?
MediHelp also lists interactions of Doravirine with, for example, Amobarbital, Apalutamide, Carbamazepine. The full list is on the Doravirine page.
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