Drug interactions
Ephedrine + Oxytocin
Severity: Major
Ephedrine and Oxytocin: 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
Oxytocin may cause hypotension, and ephedrine is often used to treat it, but when given after oxytocin a vasopressor can contribute to severe hypertension. This is recognized with oxytocic drugs and vasoconstrictors, particularly in the postpartum period.
What this interaction means in plain words
Ephedrine and Oxytocin 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.
Ephedrine belongs to Cardiovascular; Oxytocin belongs to Endocrine.
Why it happens
Additive pressor effects of sympathomimetic vasoconstriction with oxytocic-related vascular effects.
What to do
Monitor blood pressure frequently and titrate ephedrine in small doses when used with oxytocin. Avoid combining with other vasoconstrictors where possible.
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 Oxytocin
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 Oxytocin?
MediHelp rates the interaction as major. Ephedrine and Oxytocin 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. Oxytocin may cause hypotension, and ephedrine is often used to treat it, but when given after oxytocin a vasopressor can contribute to severe hypertension. This is recognized with oxytocic drugs and vasoconstrictors, particularly in the postpartum period.
How serious is the interaction between Ephedrine and Oxytocin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure frequently and titrate ephedrine in small doses when used with oxytocin. Avoid combining with other vasoconstrictors where possible.
What other medicines interact with Oxytocin?
MediHelp also lists interactions of Oxytocin with, for example, Carboprost tromethamine, Dinoprostone, Fexinidazole. The full list is on the Oxytocin page.
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