Drug interactions
Methyldopa + Ziprasidone
Severity: Moderate
Methyldopa and Ziprasidone: 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
Ziprasidone can add to the blood pressure lowering effect of methyldopa, causing orthostatic hypotension and dizziness. Ziprasidone also prolongs the QT interval, so cardiovascular status matters. Clinically the combination is generally manageable.
What this interaction means in plain words
Methyldopa and Ziprasidone 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.
Methyldopa belongs to Cardiovascular; Ziprasidone belongs to Central Nervous System.
Why it happens
Additive hypotensive effects via alpha-1 blockade and central sympatholytic action.
What to do
Monitor blood pressure and orthostatic symptoms, and check electrolytes and ECG in patients with QT risk factors. Adjust doses 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
Other interactions of Ziprasidone
- Amiodarone + Ziprasidone Contraindicated
- Amitriptyline + Ziprasidone Contraindicated
- Arsenic trioxide + Ziprasidone Contraindicated
- Bedaquiline + Ziprasidone Contraindicated
- Chloroquine + Ziprasidone Contraindicated
- Citalopram + Ziprasidone Contraindicated
Frequently asked questions
Can I take Methyldopa with Ziprasidone?
MediHelp rates the interaction as moderate. Methyldopa and Ziprasidone 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. Ziprasidone can add to the blood pressure lowering effect of methyldopa, causing orthostatic hypotension and dizziness. Ziprasidone also prolongs the QT interval, so cardiovascular status matters. Clinically the combination is generally manageable.
How serious is the interaction between Methyldopa and Ziprasidone?
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 orthostatic symptoms, and check electrolytes and ECG in patients with QT risk factors. Adjust doses 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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