Drug interactions
Cobicistat + Vinorelbine
Severity: Major
Cobicistat and Vinorelbine: major 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
Cobicistat is a potent CYP3A inhibitor and can substantially increase vinorelbine concentrations. This raises the risk of severe neutropenia and neurotoxicity.
What this interaction means in plain words
Cobicistat and Vinorelbine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Cobicistat belongs to Miscellaneous; Vinorelbine belongs to Oncology.
Why it happens
Strong inhibition of CYP3A4 by cobicistat reduces vinorelbine clearance.
What to do
Avoid the combination where possible, or monitor blood counts frequently and reduce the vinorelbine dose. Consider a non-boosted antiretroviral regimen.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Vinorelbine
Other interactions of Cobicistat
- Alfuzosin + Cobicistat Contraindicated
- Apalutamide + Cobicistat Contraindicated
- Cobicistat + Colchicine Contraindicated
- Cobicistat + Dronedarone Contraindicated
- Cobicistat + Eletriptan Contraindicated
- Cobicistat + Eplerenone Contraindicated
Frequently asked questions
Can I take Cobicistat with Vinorelbine?
MediHelp rates the interaction as major. Cobicistat and Vinorelbine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Cobicistat is a potent CYP3A inhibitor and can substantially increase vinorelbine concentrations. This raises the risk of severe neutropenia and neurotoxicity.
How serious is the interaction between Cobicistat and Vinorelbine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination where possible, or monitor blood counts frequently and reduce the vinorelbine dose. Consider a non-boosted antiretroviral regimen.
What other medicines interact with Vinorelbine?
MediHelp also lists interactions of Vinorelbine with, for example, Adenovirus types 4 and 7 live, Apalutamide, Belatacept. The full list is on the Vinorelbine page.
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