Drug interactions
Haloperidol + Melatonin
Severity: Minor
Haloperidol and Melatonin: 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
Melatonin has mild sedative effects that may add to haloperidol-related drowsiness. The interaction is generally of limited clinical importance.
What this interaction means in plain words
Haloperidol and Melatonin 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; Melatonin belongs to Gastrointestinal Tract.
Why it happens
Additive mild CNS depressant effects.
What to do
No dose change is needed; advise patients about additive drowsiness and caution with driving.
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 Melatonin
- Fluvoxamine + Melatonin Major
- Alfentanil + Melatonin Moderate
- Belladonna and opium + Melatonin Moderate
- Buprenorphine buccal + Melatonin Moderate
- Butabarbital + Melatonin Moderate
- Butalbital + Melatonin Moderate
Frequently asked questions
Can I take Haloperidol with Melatonin?
MediHelp rates the interaction as minor. Haloperidol and Melatonin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Melatonin has mild sedative effects that may add to haloperidol-related drowsiness. The interaction is generally of limited clinical importance.
How serious is the interaction between Haloperidol and Melatonin?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose change is needed; advise patients about additive drowsiness and caution with driving.
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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