Drug interactions
Ephedrine + Oxymetazoline
Severity: Moderate
Ephedrine and Oxymetazoline: 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
Both drugs have sympathomimetic vasoconstrictor effects, so combined use may cause additive increases in blood pressure and heart rate. With topical oxymetazoline the systemic contribution is modest but may matter in cardiovascular disease.
What this interaction means in plain words
Ephedrine and Oxymetazoline 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.
Ephedrine belongs to Cardiovascular; Oxymetazoline belongs to Respiratory.
Why it happens
Additive pharmacodynamic adrenergic stimulation (direct alpha-agonism plus indirect norepinephrine release).
What to do
Monitor blood pressure and heart rate, and limit oxymetazoline to short courses at labeled doses in patients receiving ephedrine.
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 Oxymetazoline
- Isocarboxazid + Oxymetazoline Major
- Oxymetazoline + Phenelzine Major
- Oxymetazoline + Tranylcypromine Major
- Amitriptyline + Oxymetazoline Moderate
- Amoxapine + Oxymetazoline Moderate
- Clomipramine + Oxymetazoline Moderate
Other interactions of Ephedrine
- Ephedrine + Isocarboxazid Contraindicated
- Ephedrine + Phenelzine Contraindicated
- Ephedrine + Procarbazine Contraindicated
- Ephedrine + Rasagiline Contraindicated
- Ephedrine + Selegiline Contraindicated
- Ephedrine + Tranylcypromine Contraindicated
Frequently asked questions
Can I take Ephedrine with Oxymetazoline?
MediHelp rates the interaction as moderate. Ephedrine and Oxymetazoline 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. Both drugs have sympathomimetic vasoconstrictor effects, so combined use may cause additive increases in blood pressure and heart rate. With topical oxymetazoline the systemic contribution is modest but may matter in cardiovascular disease.
How serious is the interaction between Ephedrine and Oxymetazoline?
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 heart rate, and limit oxymetazoline to short courses at labeled doses in patients receiving ephedrine.
What other medicines interact with Oxymetazoline?
MediHelp also lists interactions of Oxymetazoline with, for example, Isocarboxazid, Phenelzine, Tranylcypromine. The full list is on the Oxymetazoline page.
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