Drug interactions
Chlorpromazine + Formoterol-mometasone
Severity: Moderate
Chlorpromazine and Formoterol-mometasone: 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
Chlorpromazine can prolong the QT interval, and formoterol may increase arrhythmia risk through hypokalemia and tachycardia. Risk is higher at larger doses or with other risk factors.
What this interaction means in plain words
Chlorpromazine and Formoterol-mometasone 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.
Chlorpromazine belongs to Central Nervous System; Formoterol-mometasone belongs to Respiratory.
Why it happens
Additive QT prolongation with beta-2 mediated hypokalemia.
What to do
Check baseline ECG and potassium in at-risk patients and monitor QTc during therapy.
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 Formoterol-mometasone
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 Formoterol-mometasone?
MediHelp rates the interaction as moderate. Chlorpromazine and Formoterol-mometasone 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. Chlorpromazine can prolong the QT interval, and formoterol may increase arrhythmia risk through hypokalemia and tachycardia. Risk is higher at larger doses or with other risk factors.
How serious is the interaction between Chlorpromazine and Formoterol-mometasone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check baseline ECG and potassium in at-risk patients and monitor QTc during therapy.
What other medicines interact with Formoterol-mometasone?
MediHelp also lists interactions of Formoterol-mometasone with, for example, Amiodarone, Amisulpride, Amoxapine. The full list is on the Formoterol-mometasone page.
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