Drug interactions
Ethacrynic acid + Isoproterenol
Severity: Moderate
Ethacrynic acid and Isoproterenol: 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
Ethacrynic acid causes renal potassium loss, and isoproterenol shifts potassium into cells through beta-2 stimulation. Together they may produce clinically significant hypokalemia, raising the risk of arrhythmias, particularly in patients with heart disease.
What this interaction means in plain words
Ethacrynic acid and Isoproterenol 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.
Ethacrynic acid belongs to Cardiovascular; Isoproterenol belongs to Respiratory.
Why it happens
Additive hypokalemia from loop diuretic renal potassium wasting and beta-2 mediated intracellular potassium shift.
What to do
Monitor serum potassium and ECG, and replace potassium as needed. Check magnesium as well in patients at risk of arrhythmia.
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 Isoproterenol
Other interactions of Ethacrynic acid
Frequently asked questions
Can I take Ethacrynic acid with Isoproterenol?
MediHelp rates the interaction as moderate. Ethacrynic acid and Isoproterenol 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. Ethacrynic acid causes renal potassium loss, and isoproterenol shifts potassium into cells through beta-2 stimulation. Together they may produce clinically significant hypokalemia, raising the risk of arrhythmias, particularly in patients with heart disease.
How serious is the interaction between Ethacrynic acid and Isoproterenol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum potassium and ECG, and replace potassium as needed. Check magnesium as well in patients at risk of arrhythmia.
What other medicines interact with Isoproterenol?
MediHelp also lists interactions of Isoproterenol with, for example, Adrenaline-articaine, Bisoprolol, Budesonide-formoterol. The full list is on the Isoproterenol page.
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