Drug interactions
Dobutamine + Sotalol
Severity: Moderate
Dobutamine and Sotalol: 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
Sotalol is a nonselective beta-blocker and opposes the beta-1 mediated inotropic and chronotropic effects of dobutamine. Unopposed alpha-mediated vasoconstriction may raise blood pressure, and the inotropic response to dobutamine can be reduced. Dobutamine can also lower potassium and provoke arrhythmias in a patient on a QT-prolonging drug.
What this interaction means in plain words
Dobutamine and Sotalol 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.
Dobutamine belongs to Cardiovascular; Sotalol belongs to Cardiovascular.
Why it happens
Pharmacodynamic antagonism at beta-adrenergic receptors; dobutamine-related hypokalemia may further increase sotalol proarrhythmic risk.
What to do
Monitor hemodynamic response, ECG and potassium during dobutamine infusion, and titrate the dobutamine dose to effect. Be prepared for higher dobutamine requirements, or consider holding sotalol if inotropic support is needed.
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 Sotalol
- Arsenic trioxide + Sotalol Contraindicated
- Artemether / lumefantrine + Sotalol Contraindicated
- Disopyramide + Sotalol Contraindicated
- Dofetilide + Sotalol Contraindicated
- Dronedarone + Sotalol Contraindicated
- Droperidol + Sotalol Contraindicated
Other interactions of Dobutamine
Frequently asked questions
Can I take Dobutamine with Sotalol?
MediHelp rates the interaction as moderate. Dobutamine and Sotalol 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. Sotalol is a nonselective beta-blocker and opposes the beta-1 mediated inotropic and chronotropic effects of dobutamine. Unopposed alpha-mediated vasoconstriction may raise blood pressure, and the inotropic response to dobutamine can be reduced. Dobutamine can also lower potassium and provoke arrhythmias in a patient on a QT-prolonging drug.
How serious is the interaction between Dobutamine and Sotalol?
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 hemodynamic response, ECG and potassium during dobutamine infusion, and titrate the dobutamine dose to effect. Be prepared for higher dobutamine requirements, or consider holding sotalol if inotropic support is needed.
What other medicines interact with Sotalol?
MediHelp also lists interactions of Sotalol with, for example, Arsenic trioxide, Artemether / lumefantrine, Disopyramide. The full list is on the Sotalol page.
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