Drug interactions
Epinephrine racemic + Venlafaxine
Severity: Moderate
Epinephrine racemic 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
Racemic epinephrine is a sympathomimetic that can raise heart rate and blood pressure and promote arrhythmias. Venlafaxine also increases noradrenergic tone and can affect cardiac conduction, so the cardiovascular effects may be additive.
What this interaction means in plain words
Epinephrine racemic 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.
Why it happens
Additive adrenergic stimulation, with venlafaxine blocking norepinephrine reuptake and epinephrine directly stimulating adrenergic receptors.
What to do
Monitor heart rate, blood pressure and ECG when racemic epinephrine is used in patients on venlafaxine. Use the lowest effective epinephrine dose.
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
Frequently asked questions
Can I take Epinephrine racemic with Venlafaxine?
MediHelp rates the interaction as moderate. Epinephrine racemic 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. Racemic epinephrine is a sympathomimetic that can raise heart rate and blood pressure and promote arrhythmias. Venlafaxine also increases noradrenergic tone and can affect cardiac conduction, so the cardiovascular effects may be additive.
How serious is the interaction between Epinephrine racemic 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 heart rate, blood pressure and ECG when racemic epinephrine is used in patients on venlafaxine. Use the lowest effective epinephrine dose.
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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