Drug interactions
Amoxapine + Epinephrine
Severity: Major
Amoxapine and Epinephrine: 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
Tricyclic antidepressants block norepinephrine reuptake and can amplify the pressor and arrhythmic effects of injected epinephrine. Both drugs can also affect cardiac conduction and QT interval, raising the risk of ventricular arrhythmias.
What this interaction means in plain words
Amoxapine and Epinephrine 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
Inhibition of neuronal norepinephrine reuptake enhances adrenergic response, with additive proarrhythmic effects.
What to do
Use the lowest effective epinephrine dose, for example with local anesthetics, and avoid intravascular injection. Monitor blood pressure and ECG, especially with systemic epinephrine.
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 Epinephrine
- Epinephrine + Isocarboxazid Contraindicated
- Epinephrine + Phenelzine Contraindicated
- Epinephrine + Tranylcypromine Contraindicated
- Acebutolol + Epinephrine Major
- Amitriptyline + Epinephrine Major
- Atenolol-chlorthalidone + Epinephrine Major
Frequently asked questions
Can I take Amoxapine with Epinephrine?
MediHelp rates the interaction as major. Amoxapine and Epinephrine 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. Tricyclic antidepressants block norepinephrine reuptake and can amplify the pressor and arrhythmic effects of injected epinephrine. Both drugs can also affect cardiac conduction and QT interval, raising the risk of ventricular arrhythmias.
How serious is the interaction between Amoxapine and Epinephrine?
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 the lowest effective epinephrine dose, for example with local anesthetics, and avoid intravascular injection. Monitor blood pressure and ECG, especially with systemic epinephrine.
What other medicines interact with Epinephrine?
MediHelp also lists interactions of Epinephrine with, for example, Isocarboxazid, Phenelzine, Tranylcypromine. The full list is on the Epinephrine page.
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