Drug interactions
Clozapine + Pholcodine
Severity: Moderate
Clozapine and Pholcodine: 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
Pholcodine is an opioid antitussive, and with clozapine it can add to sedation and respiratory depression. Risk is greater at higher doses or in patients with respiratory compromise.
What this interaction means in plain words
Clozapine and Pholcodine 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.
What to do
Use the lowest effective dose for the shortest time and monitor for excessive drowsiness and slowed breathing. Consider a non-sedating cough alternative.
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 Clozapine
- Clozapine + Deferiprone Contraindicated
- Clozapine + Irinotecan Contraindicated
- Clozapine + Pimozide Contraindicated
- Clozapine + Thioridazine Contraindicated
- Acalabrutinib + Clozapine Major
- Adagrasib + Clozapine Major
Frequently asked questions
Can I take Clozapine with Pholcodine?
MediHelp rates the interaction as moderate. Clozapine and Pholcodine 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. Pholcodine is an opioid antitussive, and with clozapine it can add to sedation and respiratory depression. Risk is greater at higher doses or in patients with respiratory compromise.
How serious is the interaction between Clozapine and Pholcodine?
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 dose for the shortest time and monitor for excessive drowsiness and slowed breathing. Consider a non-sedating cough alternative.
What other medicines interact with Clozapine?
MediHelp also lists interactions of Clozapine with, for example, Deferiprone, Irinotecan, Pimozide. The full list is on the Clozapine page.
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