Drug interactions
Chlorpromazine + Flurazepam
Severity: Moderate
Chlorpromazine and Flurazepam: moderate 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
Flurazepam combined with chlorpromazine increases sedation and psychomotor impairment, and may depress breathing. Its long-acting metabolite makes residual effects persist into the next day, especially in older adults.
What this interaction means in plain words
Chlorpromazine and Flurazepam can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive CNS depression via GABA-A potentiation and phenothiazine sedation.
What to do
Use the lowest effective doses, avoid in frail or older patients where possible, and monitor sedation and respiratory function.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Chlorpromazine
- Chlorpromazine + Dofetilide Contraindicated
- Chlorpromazine + Dronedarone Contraindicated
- Chlorpromazine + Droperidol Contraindicated
- Chlorpromazine + Ibutilide Contraindicated
- Chlorpromazine + Metrizamide Contraindicated
- Chlorpromazine + Panobinostat Contraindicated
Frequently asked questions
Can I take Chlorpromazine with Flurazepam?
MediHelp rates the interaction as moderate. Chlorpromazine and Flurazepam can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Flurazepam combined with chlorpromazine increases sedation and psychomotor impairment, and may depress breathing. Its long-acting metabolite makes residual effects persist into the next day, especially in older adults.
How serious is the interaction between Chlorpromazine and Flurazepam?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use the lowest effective doses, avoid in frail or older patients where possible, and monitor sedation and respiratory function.
What other medicines interact with Chlorpromazine?
MediHelp also lists interactions of Chlorpromazine with, for example, Dofetilide, Dronedarone, Droperidol. The full list is on the Chlorpromazine page.
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