Drug interactions
Haloperidol + Palovarotene
Severity: Minor
Haloperidol and Palovarotene: minor 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
Haloperidol has weak inhibitory effects on CYP3A4 and may modestly raise palovarotene exposure. Higher palovarotene levels could worsen retinoid-related adverse effects such as mucocutaneous toxicity and premature growth plate closure in children.
What this interaction means in plain words
Haloperidol and Palovarotene have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Haloperidol belongs to Central Nervous System; Palovarotene belongs to Miscellaneous.
Why it happens
Weak CYP3A4 inhibition by haloperidol may reduce the metabolic clearance of palovarotene, a CYP3A substrate.
What to do
Monitor for retinoid adverse effects when the two are combined. Haloperidol is not a clinically established moderate CYP3A inhibitor, so empirical palovarotene dose reduction is generally not required unless toxicity appears.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Haloperidol
- Dofetilide + Haloperidol Contraindicated
- Dronedarone + Haloperidol Contraindicated
- Haloperidol + Ibutilide Contraindicated
- Haloperidol + Levoketoconazole Contraindicated
- Haloperidol + Panobinostat Contraindicated
- Haloperidol + Pimozide 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 Haloperidol with Palovarotene?
MediHelp rates the interaction as minor. Haloperidol and Palovarotene have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Haloperidol has weak inhibitory effects on CYP3A4 and may modestly raise palovarotene exposure. Higher palovarotene levels could worsen retinoid-related adverse effects such as mucocutaneous toxicity and premature growth plate closure in children.
How serious is the interaction between Haloperidol and Palovarotene?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for retinoid adverse effects when the two are combined. Haloperidol is not a clinically established moderate CYP3A inhibitor, so empirical palovarotene dose reduction is generally not required unless toxicity appears.
What other medicines interact with Haloperidol?
MediHelp also lists interactions of Haloperidol with, for example, Dofetilide, Dronedarone, Ibutilide. The full list is on the Haloperidol page.
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