Drug interactions
Droperidol + Methyldopa
Severity: Moderate
Droperidol 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
Droperidol has alpha-blocking activity and can add to methyldopa-induced hypotension. Methyldopa combined with dopamine antagonists has also been reported to cause extrapyramidal or cognitive effects. Droperidol additionally prolongs the QT interval, which is independent of methyldopa.
What this interaction means in plain words
Droperidol 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.
Why it happens
Additive hypotension via alpha-blockade; possible central dopaminergic interaction, not firmly established.
What to do
Monitor blood pressure and mental status during and after droperidol dosing. Reduce the droperidol dose or reassess therapy if hypotension occurs.
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
Frequently asked questions
Can I take Droperidol with Methyldopa?
MediHelp rates the interaction as moderate. Droperidol 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. Droperidol has alpha-blocking activity and can add to methyldopa-induced hypotension. Methyldopa combined with dopamine antagonists has also been reported to cause extrapyramidal or cognitive effects. Droperidol additionally prolongs the QT interval, which is independent of methyldopa.
How serious is the interaction between Droperidol 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 and mental status during and after droperidol dosing. Reduce the droperidol dose or reassess therapy if hypotension occurs.
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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