Drug interactions
Esmolol + Saquinavir
Severity: Major
Esmolol and Saquinavir: 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
Saquinavir can prolong the PR and QT intervals, and esmolol slows AV conduction. Combined use may raise the risk of bradycardia, AV block and arrhythmia.
What this interaction means in plain words
Esmolol and Saquinavir 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.
Why it happens
Additive effects on cardiac conduction (PR prolongation) through pharmacodynamic synergism.
What to do
Use an alternative where possible; otherwise monitor ECG and heart rate closely, and avoid in patients with baseline conduction disease.
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 Esmolol
- Acebutolol + Esmolol Major
- Amifostine + Esmolol Major
- Amiodarone + Esmolol Major
- Celiprolol + Esmolol Major
- Diltiazem + Esmolol Major
- Epinephrine racemic + Esmolol Major
Frequently asked questions
Can I take Esmolol with Saquinavir?
MediHelp rates the interaction as major. Esmolol and Saquinavir 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. Saquinavir can prolong the PR and QT intervals, and esmolol slows AV conduction. Combined use may raise the risk of bradycardia, AV block and arrhythmia.
How serious is the interaction between Esmolol and Saquinavir?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use an alternative where possible; otherwise monitor ECG and heart rate closely, and avoid in patients with baseline conduction disease.
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.
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