Drug interactions
Indapamide + Quetiapine
Severity: Major
Indapamide and Quetiapine: 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
Quetiapine can prolong the QT interval, and indapamide can cause hypokalemia and hypomagnesemia, which further increases the risk of torsades de pointes. The risk is greatest with overdose, structural heart disease, bradycardia or other QT-prolonging drugs.
What this interaction means in plain words
Indapamide and Quetiapine 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.
Indapamide belongs to Cardiovascular; Quetiapine belongs to Central Nervous System.
Why it happens
Additive QT risk: quetiapine blocks cardiac repolarizing potassium channels, while diuretic-induced electrolyte depletion lowers repolarization reserve.
What to do
Check and correct potassium and magnesium before and during therapy, and obtain a baseline ECG in patients with other risk factors. Consider an alternative antihypertensive if QT prolongation develops.
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
Other interactions of Quetiapine
- Adagrasib + Quetiapine Major
- Amiodarone + Quetiapine Major
- Amisulpride + Quetiapine Major
- Amoxapine + Quetiapine Major
- Anagrelide + Quetiapine Major
- Apalutamide + Quetiapine Major
Frequently asked questions
Can I take Indapamide with Quetiapine?
MediHelp rates the interaction as major. Indapamide and Quetiapine 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. Quetiapine can prolong the QT interval, and indapamide can cause hypokalemia and hypomagnesemia, which further increases the risk of torsades de pointes. The risk is greatest with overdose, structural heart disease, bradycardia or other QT-prolonging drugs.
How serious is the interaction between Indapamide and Quetiapine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check and correct potassium and magnesium before and during therapy, and obtain a baseline ECG in patients with other risk factors. Consider an alternative antihypertensive if QT prolongation develops.
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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