Drug interactions
Fluphenazine + Melatonin
Severity: Minor
Fluphenazine 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 may add to the sedative effect of fluphenazine, causing daytime drowsiness and impaired psychomotor performance. The clinical impact is usually small.
What this interaction means in plain words
Fluphenazine 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.
Fluphenazine belongs to Central Nervous System; Melatonin belongs to Gastrointestinal Tract.
Why it happens
Additive central nervous system depressant effects.
What to do
Counsel patients about drowsiness and caution with driving. Adjust melatonin dose or timing if daytime sedation occurs.
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 Fluphenazine
- Arsenic trioxide + Fluphenazine Contraindicated
- Dofetilide + Fluphenazine Contraindicated
- Fluphenazine + Ibutilide Contraindicated
- Fluphenazine + Pimozide Contraindicated
- Adagrasib + Fluphenazine Major
- Alfentanil + Fluphenazine Major
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 Fluphenazine with Melatonin?
MediHelp rates the interaction as minor. Fluphenazine 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 may add to the sedative effect of fluphenazine, causing daytime drowsiness and impaired psychomotor performance. The clinical impact is usually small.
How serious is the interaction between Fluphenazine 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: Counsel patients about drowsiness and caution with driving. Adjust melatonin dose or timing if daytime sedation occurs.
What other medicines interact with Fluphenazine?
MediHelp also lists interactions of Fluphenazine with, for example, Arsenic trioxide, Dofetilide, Ibutilide. The full list is on the Fluphenazine page.
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