Interazioni tra farmaci
Amiodarone + Torsemide
Gravità: Maggiore
Amiodarone and Torsemide: major interaction.
Ultimo aggiornamento Fonti: US FDA label
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Sintesi
Torsemide can cause hypokalemia and hypomagnesemia, which increase the risk of QT prolongation and torsades de pointes in patients taking amiodarone. Amiodarone prolongs repolarization, so electrolyte loss lowers the threshold for arrhythmia. The risk is highest with high diuretic doses, renal dysfunction, bradycardia, structural heart disease, female sex and other QT-prolonging drugs.
Cosa significa questa interazione in parole semplici
Amiodarone and Torsemide 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.
Amiodarone belongs to Cardiovascular; Torsemide belongs to Cardiovascular.
Perché avviene
Additive pharmacodynamic effect: loop diuretic-induced potassium and magnesium depletion potentiates the QT-prolonging effect of amiodarone.
Cosa fare
Check serum potassium and magnesium before starting and periodically during co-therapy, especially after dose changes or intercurrent illness with vomiting or diarrhea. Replete deficits promptly and keep potassium in the high-normal range (about 4.0 mmol/L or above) and magnesium in the normal range.
Cosa chiedere al farmacista
- 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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Riferimenti
Altre interazioni di Amiodarone
- Amiodarone + Amisulpride Controindicata
- Amiodarone + Arsenic trioxide Controindicata
- Amiodarone + Dofetilide Controindicata
- Amiodarone + Dronedarone Controindicata
- Amiodarone + Droperidol Controindicata
- Amiodarone + Eliglustat Controindicata
Altre interazioni di Torsemide
- Amikacin + Torsemide Maggiore
- Carbenoxolone + Torsemide Maggiore
- Chlorthalidone + Torsemide Maggiore
- Dexamethasone-tobramycin + Torsemide Maggiore
- Digoxin + Torsemide Maggiore
- Ethacrynic acid + Torsemide Maggiore
Domande frequenti
Can I take Amiodarone with Torsemide?
MediHelp rates the interaction as major. Amiodarone and Torsemide 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. Torsemide can cause hypokalemia and hypomagnesemia, which increase the risk of QT prolongation and torsades de pointes in patients taking amiodarone. Amiodarone prolongs repolarization, so electrolyte loss lowers the threshold for arrhythmia. The risk is highest with high diuretic doses, renal dysfunction, bradycardia, structural heart disease, female sex and other QT-prolonging drugs.
How serious is the interaction between Amiodarone and Torsemide?
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 serum potassium and magnesium before starting and periodically during co-therapy, especially after dose changes or intercurrent illness with vomiting or diarrhea. Replete deficits promptly and keep potassium in the high-normal range (about 4.0 mmol/L or above) and magnesium in the normal range.
What other medicines interact with Amiodarone?
MediHelp also lists interactions of Amiodarone with, for example, Amisulpride, Arsenic trioxide, Dofetilide. The full list is on the Amiodarone page.
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