Drug interactions
Indapamide + Trifluoperazine
Severity: Major
Indapamide and Trifluoperazine: 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
Trifluoperazine is a phenothiazine that can prolong the QT interval. Together with indapamide, which can cause hypokalemia and hypomagnesemia, the risk of torsades de pointes is higher.
What this interaction means in plain words
Indapamide and Trifluoperazine 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, with diuretic-induced hypokalemia and hypomagnesemia increasing arrhythmic risk.
What to do
Avoid if possible; otherwise monitor ECG and keep potassium and magnesium within normal range, especially at initiation and after dose changes.
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 Indapamide
Frequently asked questions
Can I take Indapamide with Trifluoperazine?
MediHelp rates the interaction as major. Indapamide and Trifluoperazine 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. Trifluoperazine is a phenothiazine that can prolong the QT interval. Together with indapamide, which can cause hypokalemia and hypomagnesemia, the risk of torsades de pointes is higher.
How serious is the interaction between Indapamide and Trifluoperazine?
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 if possible; otherwise monitor ECG and keep potassium and magnesium within normal range, especially at initiation and after dose changes.
What other medicines interact with Indapamide?
MediHelp also lists interactions of Indapamide with, for example, Adagrasib, Amifostine, Amiodarone. The full list is on the Indapamide page.
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