Drug interactions
Dobutamine + Propranolol
Severity: Major
Dobutamine and Propranolol: major interaction.
Last updated Sources: US FDA label
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
Propranolol blocks the beta-adrenergic effects of dobutamine, reducing its inotropic benefit. Unopposed alpha-mediated vasoconstriction may raise blood pressure with reflex bradycardia.
What this interaction means in plain words
Dobutamine and Propranolol 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; Propranolol belongs to Cardiovascular.
Why it happens
Pharmacodynamic antagonism at beta-adrenergic receptors, with unopposed alpha effects when nonselective beta-blockade is present.
What to do
Avoid combining where possible, or hold propranolol before dobutamine use. If used together, monitor hemodynamics continuously and titrate dobutamine to effect.
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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References
Other interactions of Propranolol
- Propranolol + Thioridazine Contraindicated
- Acebutolol + Propranolol Major
- Adrenaline-articaine + Propranolol Major
- Amifostine + Propranolol Major
- Amiodarone + Propranolol Major
- Arformoterol + Propranolol Major
Other interactions of Dobutamine
Frequently asked questions
Can I take Dobutamine with Propranolol?
MediHelp rates the interaction as major. Dobutamine and Propranolol 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. Propranolol blocks the beta-adrenergic effects of dobutamine, reducing its inotropic benefit. Unopposed alpha-mediated vasoconstriction may raise blood pressure with reflex bradycardia.
How serious is the interaction between Dobutamine and Propranolol?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid combining where possible, or hold propranolol before dobutamine use. If used together, monitor hemodynamics continuously and titrate dobutamine to effect.
What other medicines interact with Propranolol?
MediHelp also lists interactions of Propranolol with, for example, Thioridazine, Acebutolol, Adrenaline-articaine. The full list is on the Propranolol page.
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