Drug interactions
Esmolol + Guanfacine
Severity: Moderate
Esmolol and Guanfacine: 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
Both lower blood pressure and heart rate, so bradycardia and hypotension may be additive. Stopping guanfacine while on a beta-blocker can cause rebound hypertension.
What this interaction means in plain words
Esmolol and Guanfacine 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.
Esmolol belongs to Cardiovascular; Guanfacine belongs to Cardiovascular.
Why it happens
Additive hemodynamic effects of central alpha-2 agonism and beta-blockade, with unopposed alpha activity on guanfacine withdrawal.
What to do
Monitor blood pressure and heart rate; taper guanfacine gradually and consider stopping the beta-blocker first if both are to be withdrawn.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Esmolol and Guanfacine, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Esmolol
- Acebutolol + Esmolol Major
- Amifostine + Esmolol Major
- Amiodarone + Esmolol Major
- Celiprolol + Esmolol Major
- Diltiazem + Esmolol Major
- Epinephrine racemic + Esmolol Major
Other interactions of Guanfacine
- Clonidine + Guanfacine Major
- Guanfacine + Lofexidine Major
- Aldesleukin + Guanfacine Moderate
- Amiodarone + Guanfacine Moderate
- Amisulpride + Guanfacine Moderate
- Amitriptyline + Guanfacine Moderate
Frequently asked questions
Can I take Esmolol with Guanfacine?
MediHelp rates the interaction as moderate. Esmolol and Guanfacine 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. Both lower blood pressure and heart rate, so bradycardia and hypotension may be additive. Stopping guanfacine while on a beta-blocker can cause rebound hypertension.
How serious is the interaction between Esmolol and Guanfacine?
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 blood pressure and heart rate; taper guanfacine gradually and consider stopping the beta-blocker first if both are to be withdrawn.
What other medicines interact with Esmolol?
MediHelp also lists interactions of Esmolol with, for example, Acebutolol, Amifostine, Amiodarone. The full list is on the Esmolol page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
