Drug interactions
Rifapentine + Sofosbuvir-velpatasvir
Severity: Contraindicated
Rifapentine and Sofosbuvir-velpatasvir: 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
Rifapentine is a strong inducer of CYP3A4 and P-gp and is expected to substantially reduce velpatasvir and sofosbuvir levels. This may lead to HCV treatment failure.
What this interaction means in plain words
Rifapentine and Sofosbuvir-velpatasvir 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.
Rifapentine belongs to Anti Bacterial; Sofosbuvir-velpatasvir belongs to Anti Virals.
Why it happens
Rifapentine induces P-gp and CYP3A4/2B6/2C8, increasing antiviral clearance.
What to do
Avoid concurrent use and defer HCV therapy until rifapentine is finished, or choose a different TB 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 Sofosbuvir-velpatasvir
- Rifampin + Sofosbuvir-velpatasvir Contraindicated
- Sofosbuvir-velpatasvir + St john's wort Contraindicated
- Amiodarone + Sofosbuvir-velpatasvir Major
- Apalutamide + Sofosbuvir-velpatasvir Major
- Carbamazepine + Sofosbuvir-velpatasvir Major
- Dabrafenib + Sofosbuvir-velpatasvir Major
Other interactions of Rifapentine
- Ledipasvir-sofosbuvir + Rifapentine Contraindicated
- Lorlatinib + Rifapentine Contraindicated
- Lurasidone + Rifapentine Contraindicated
- Ranolazine + Rifapentine Contraindicated
- Rifapentine + Sofosbuvir-velpatasvir-voxilaprevir Contraindicated
- Abiraterone + Rifapentine Major
Frequently asked questions
Can I take Rifapentine with Sofosbuvir-velpatasvir?
MediHelp rates the interaction as contraindicated. Rifapentine and Sofosbuvir-velpatasvir 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. Rifapentine is a strong inducer of CYP3A4 and P-gp and is expected to substantially reduce velpatasvir and sofosbuvir levels. This may lead to HCV treatment failure.
How serious is the interaction between Rifapentine and Sofosbuvir-velpatasvir?
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 concurrent use and defer HCV therapy until rifapentine is finished, or choose a different TB regimen.
What other medicines interact with Sofosbuvir-velpatasvir?
MediHelp also lists interactions of Sofosbuvir-velpatasvir with, for example, Rifampin, St john's wort, Amiodarone. The full list is on the Sofosbuvir-velpatasvir page.
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