Drug interactions
Pseudoephedrine + Venlafaxine
Severity: Moderate
Pseudoephedrine 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 inhibits norepinephrine reuptake, particularly at higher doses, and can raise blood pressure on its own. Adding pseudoephedrine may further increase blood pressure and heart rate.
What this interaction means in plain words
Pseudoephedrine 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.
Pseudoephedrine belongs to Respiratory; Venlafaxine belongs to Central Nervous System.
Why it happens
Additive noradrenergic effects from reuptake inhibition and sympathomimetic action.
What to do
Monitor blood pressure, and avoid in uncontrolled hypertension. Use non-sympathomimetic decongestants when feasible.
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 Pseudoephedrine
- Isocarboxazid + Pseudoephedrine Contraindicated
- Phenelzine + Pseudoephedrine Contraindicated
- Pseudoephedrine + Rasagiline Contraindicated
- Pseudoephedrine + Selegiline Contraindicated
- Pseudoephedrine + Selegiline transdermal Contraindicated
- Pseudoephedrine + Tranylcypromine Contraindicated
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 Pseudoephedrine with Venlafaxine?
MediHelp rates the interaction as moderate. Pseudoephedrine 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 inhibits norepinephrine reuptake, particularly at higher doses, and can raise blood pressure on its own. Adding pseudoephedrine may further increase blood pressure and heart rate.
How serious is the interaction between Pseudoephedrine 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, and avoid in uncontrolled hypertension. Use non-sympathomimetic decongestants when feasible.
What other medicines interact with Pseudoephedrine?
MediHelp also lists interactions of Pseudoephedrine with, for example, Isocarboxazid, Phenelzine, Rasagiline. The full list is on the Pseudoephedrine page.
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