Drug interactions
Dobutamine + Metoprolol
Severity: Major
Dobutamine and Metoprolol: 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
Metoprolol blocks the beta-1 effects of dobutamine, reducing its inotropic and chronotropic effect. Unopposed alpha and beta-2 activity can cause hypertension or altered vascular resistance, and beta-blockade can make dobutamine less effective in acute heart failure.
What this interaction means in plain words
Dobutamine and Metoprolol 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.
Dobutamine belongs to Cardiovascular; Metoprolol belongs to Cardiovascular.
Why it happens
Pharmacodynamic antagonism at beta-1 adrenergic receptors.
What to do
Reassess the need for dobutamine in patients on beta-blockers, and consider holding or reducing metoprolol in acute decompensation, or use a non-adrenergic agent such as milrinone. Monitor hemodynamics closely.
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 Metoprolol
- Metoprolol + Thioridazine Contraindicated
- Amifostine + Metoprolol Major
- Amiodarone + Metoprolol Major
- Atenolol-chlorthalidone + Metoprolol Major
- Atenolol + Metoprolol Major
- Betaxolol + Metoprolol Major
Other interactions of Dobutamine
Frequently asked questions
Can I take Dobutamine with Metoprolol?
MediHelp rates the interaction as major. Dobutamine and Metoprolol 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. Metoprolol blocks the beta-1 effects of dobutamine, reducing its inotropic and chronotropic effect. Unopposed alpha and beta-2 activity can cause hypertension or altered vascular resistance, and beta-blockade can make dobutamine less effective in acute heart failure.
How serious is the interaction between Dobutamine and Metoprolol?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Reassess the need for dobutamine in patients on beta-blockers, and consider holding or reducing metoprolol in acute decompensation, or use a non-adrenergic agent such as milrinone. Monitor hemodynamics closely.
What other medicines interact with Metoprolol?
MediHelp also lists interactions of Metoprolol with, for example, Thioridazine, Amifostine, Amiodarone. The full list is on the Metoprolol page.
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