Drug interactions
Lofepramine + Prochlorperazine
Severity: Major
Lofepramine and Prochlorperazine: major 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
Both drugs can prolong the QT interval and may add to anticholinergic and sedative effects. Together they can increase the risk of ventricular arrhythmias, particularly with electrolyte disturbance or heart disease.
What this interaction means in plain words
Lofepramine and Prochlorperazine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive QT prolongation through cardiac ion channel blockade, plus additive anticholinergic and sedative effects.
What to do
Avoid the combination if an alternative exists. If used together, obtain a baseline ECG, correct electrolytes and monitor the QTc.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Prochlorperazine
- Dronedarone + Prochlorperazine Contraindicated
- Ibutilide + Prochlorperazine Contraindicated
- Nilotinib + Prochlorperazine Contraindicated
- Pimozide + Prochlorperazine Contraindicated
- Prochlorperazine + Thioridazine Contraindicated
- Amiodarone + Prochlorperazine Major
Frequently asked questions
Can I take Lofepramine with Prochlorperazine?
MediHelp rates the interaction as major. Lofepramine and Prochlorperazine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Both drugs can prolong the QT interval and may add to anticholinergic and sedative effects. Together they can increase the risk of ventricular arrhythmias, particularly with electrolyte disturbance or heart disease.
How serious is the interaction between Lofepramine and Prochlorperazine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination if an alternative exists. If used together, obtain a baseline ECG, correct electrolytes and monitor the QTc.
What other medicines interact with Prochlorperazine?
MediHelp also lists interactions of Prochlorperazine with, for example, Dronedarone, Ibutilide, Nilotinib. The full list is on the Prochlorperazine page.
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