Drug interactions
Epinephrine + Venlafaxine
Severity: Moderate
Epinephrine and Venlafaxine: 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
Venlafaxine blocks norepinephrine reuptake and can raise blood pressure and heart rate, so systemic epinephrine may produce exaggerated pressor and tachycardic responses. Both agents have been associated with QT effects and arrhythmia risk, particularly in patients with heart disease.
What this interaction means in plain words
Epinephrine and Venlafaxine 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.
Epinephrine belongs to Endocrine; Venlafaxine belongs to Central Nervous System.
Why it happens
Additive adrenergic and cardiovascular effects, with possible additive QT prolongation.
What to do
Monitor blood pressure, heart rate and ECG when systemic epinephrine is given, especially in patients with cardiac disease. Do not withhold epinephrine in anaphylaxis or resuscitation.
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?
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Other interactions of Venlafaxine
- Isocarboxazid + Venlafaxine Contraindicated
- Methylene blue + Venlafaxine Contraindicated
- Phenelzine + Venlafaxine Contraindicated
- Procarbazine + Venlafaxine Contraindicated
- Rasagiline + Venlafaxine Contraindicated
- Safinamide + Venlafaxine Contraindicated
Other interactions of Epinephrine
- Epinephrine + Isocarboxazid Contraindicated
- Epinephrine + Phenelzine Contraindicated
- Epinephrine + Tranylcypromine Contraindicated
- Acebutolol + Epinephrine Major
- Amitriptyline + Epinephrine Major
- Amoxapine + Epinephrine Major
Frequently asked questions
Can I take Epinephrine with Venlafaxine?
MediHelp rates the interaction as moderate. Epinephrine and Venlafaxine 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. Venlafaxine blocks norepinephrine reuptake and can raise blood pressure and heart rate, so systemic epinephrine may produce exaggerated pressor and tachycardic responses. Both agents have been associated with QT effects and arrhythmia risk, particularly in patients with heart disease.
How serious is the interaction between Epinephrine and Venlafaxine?
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, heart rate and ECG when systemic epinephrine is given, especially in patients with cardiac disease. Do not withhold epinephrine in anaphylaxis or resuscitation.
What other medicines interact with Venlafaxine?
MediHelp also lists interactions of Venlafaxine with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Venlafaxine page.
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