Drug interactions
Methyldopa + Pretomanid
Severity: Major
Methyldopa and Pretomanid: 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
Pretomanid-containing regimens are associated with hepatotoxicity, and methyldopa can also cause liver injury. Concurrent use may increase the risk of clinically significant hepatic damage.
What this interaction means in plain words
Methyldopa and Pretomanid 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.
Methyldopa belongs to Cardiovascular; Pretomanid belongs to Anti Bacterial.
Why it happens
Additive hepatotoxicity from two drugs that can independently injure the liver.
What to do
Avoid methyldopa during pretomanid therapy and use an alternative antihypertensive. If unavoidable, monitor liver function tests frequently.
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 Methyldopa
- Methyldopa + Tranylcypromine Contraindicated
- Iobenguane i + Methyldopa Major
- Lofexidine + Methyldopa Major
- Methyldopa + Pexidartinib Major
- Methyldopa + Thioridazine Major
- Adrenaline-articaine + Methyldopa Moderate
Other interactions of Pretomanid
Frequently asked questions
Can I take Methyldopa with Pretomanid?
MediHelp rates the interaction as major. Methyldopa and Pretomanid 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. Pretomanid-containing regimens are associated with hepatotoxicity, and methyldopa can also cause liver injury. Concurrent use may increase the risk of clinically significant hepatic damage.
How serious is the interaction between Methyldopa and Pretomanid?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid methyldopa during pretomanid therapy and use an alternative antihypertensive. If unavoidable, monitor liver function tests frequently.
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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