Drug interactions
Ephedrine + Methyldopa
Severity: Moderate
Ephedrine and Methyldopa: 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
Ephedrine raises blood pressure and may offset the antihypertensive action of methyldopa. Conversely, methyldopa has been reported to alter pressor responsiveness to sympathomimetics, so the blood pressure response can be unpredictable.
What this interaction means in plain words
Ephedrine and Methyldopa 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; Methyldopa belongs to Cardiovascular.
Why it happens
Pharmacodynamic opposition between indirect sympathomimetic pressor effect and methyldopa's sympatholytic action; methyldopa's false transmitter may also alter response.
What to do
Monitor blood pressure closely when ephedrine is given, especially parenterally. Titrate ephedrine to effect and adjust antihypertensive therapy as needed.
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 Methyldopa
- Methyldopa + Tranylcypromine Contraindicated
- Iobenguane i + Methyldopa Major
- Lofexidine + Methyldopa Major
- Methyldopa + Pexidartinib Major
- Methyldopa + Pretomanid Major
- Methyldopa + Thioridazine Major
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 Methyldopa?
MediHelp rates the interaction as moderate. Ephedrine and Methyldopa 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 raises blood pressure and may offset the antihypertensive action of methyldopa. Conversely, methyldopa has been reported to alter pressor responsiveness to sympathomimetics, so the blood pressure response can be unpredictable.
How serious is the interaction between Ephedrine and Methyldopa?
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 closely when ephedrine is given, especially parenterally. Titrate ephedrine to effect and adjust antihypertensive therapy as needed.
What other medicines interact with Methyldopa?
MediHelp also lists interactions of Methyldopa with, for example, Tranylcypromine, Iobenguane i, Lofexidine. The full list is on the Methyldopa page.
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