Drug interactions
Palovarotene + Ribociclib
Severity: Major
Palovarotene and Ribociclib: 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
Ribociclib can increase palovarotene exposure, which may worsen retinoid toxicity such as mucocutaneous effects and premature epiphyseal closure in children.
What this interaction means in plain words
Palovarotene and Ribociclib 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.
Palovarotene belongs to Miscellaneous; Ribociclib belongs to Oncology.
Why it happens
Ribociclib inhibits CYP3A4, reducing palovarotene clearance.
What to do
Avoid the combination; if unavoidable, reduce the palovarotene dose by 50% per labeling and monitor for retinoid toxicity.
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 Ribociclib
- Amiodarone + Ribociclib Contraindicated
- Cisapride + Ribociclib Contraindicated
- Dofetilide + Ribociclib Contraindicated
- Dronedarone + Ribociclib Contraindicated
- Flibanserin + Ribociclib Contraindicated
- Ibutilide + Ribociclib Contraindicated
Other interactions of Palovarotene
- Acitretin + Palovarotene Contraindicated
- Isotretinoin + Palovarotene Contraindicated
- Amiodarone + Palovarotene Major
- Amobarbital + Palovarotene Major
- Apalutamide + Palovarotene Major
- Aprepitant + Palovarotene Major
Frequently asked questions
Can I take Palovarotene with Ribociclib?
MediHelp rates the interaction as major. Palovarotene and Ribociclib 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. Ribociclib can increase palovarotene exposure, which may worsen retinoid toxicity such as mucocutaneous effects and premature epiphyseal closure in children.
How serious is the interaction between Palovarotene and Ribociclib?
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; if unavoidable, reduce the palovarotene dose by 50% per labeling and monitor for retinoid toxicity.
What other medicines interact with Ribociclib?
MediHelp also lists interactions of Ribociclib with, for example, Amiodarone, Cisapride, Dofetilide. The full list is on the Ribociclib page.
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