Drug interactions
Ribociclib + Trazodone
Severity: Major
Ribociclib and Trazodone: 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 inhibits CYP3A4 and can raise trazodone concentrations, increasing sedation, hypotension and adverse effects. Both drugs also prolong the QT interval, which compounds arrhythmia risk.
What this interaction means in plain words
Ribociclib and Trazodone 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 belongs to Oncology; Trazodone belongs to Central Nervous System.
Why it happens
CYP3A4 inhibition by ribociclib reduces trazodone clearance, plus additive QT prolongation.
What to do
Avoid if possible; if used, start trazodone at a low dose and titrate cautiously. Monitor ECG, electrolytes and for excessive sedation or hypotension.
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 Trazodone
- Arsenic trioxide + Trazodone Contraindicated
- Ibutilide + Trazodone Contraindicated
- Isocarboxazid + Trazodone Contraindicated
- Levoketoconazole + Trazodone Contraindicated
- Methylene blue + Trazodone Contraindicated
- Phenelzine + Trazodone Contraindicated
Other interactions of Ribociclib
- Amiodarone + Ribociclib Contraindicated
- Cisapride + Ribociclib Contraindicated
- Dofetilide + Ribociclib Contraindicated
- Dronedarone + Ribociclib Contraindicated
- Flibanserin + Ribociclib Contraindicated
- Ibutilide + Ribociclib Contraindicated
Frequently asked questions
Can I take Ribociclib with Trazodone?
MediHelp rates the interaction as major. Ribociclib and Trazodone 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 inhibits CYP3A4 and can raise trazodone concentrations, increasing sedation, hypotension and adverse effects. Both drugs also prolong the QT interval, which compounds arrhythmia risk.
How serious is the interaction between Ribociclib and Trazodone?
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 if possible; if used, start trazodone at a low dose and titrate cautiously. Monitor ECG, electrolytes and for excessive sedation or hypotension.
What other medicines interact with Trazodone?
MediHelp also lists interactions of Trazodone with, for example, Arsenic trioxide, Ibutilide, Isocarboxazid. The full list is on the Trazodone page.
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