Drug interactions
Bosentan + Pretomanid
Severity: Major
Bosentan 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 is partly metabolized by CYP3A4, and inducers can lower its exposure. This may compromise tuberculosis treatment efficacy.
What this interaction means in plain words
Bosentan 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.
Bosentan belongs to Miscellaneous; Pretomanid belongs to Anti Bacterial.
Why it happens
Bosentan induces CYP3A4, increasing pretomanid metabolism.
What to do
Avoid coadministration and use an alternative to bosentan during therapy. If unavoidable, monitor treatment response closely.
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 Bosentan
- Bosentan + Cyclosporin Contraindicated
- Bosentan + Cyclosporine Contraindicated
- Bosentan + Glyburide Contraindicated
- Bosentan + Glyburide-metformin Contraindicated
- Bosentan + Lonafarnib Contraindicated
- Bosentan + Sparsentan Contraindicated
Other interactions of Pretomanid
Frequently asked questions
Can I take Bosentan with Pretomanid?
MediHelp rates the interaction as major. Bosentan 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 is partly metabolized by CYP3A4, and inducers can lower its exposure. This may compromise tuberculosis treatment efficacy.
How serious is the interaction between Bosentan 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 coadministration and use an alternative to bosentan during therapy. If unavoidable, monitor treatment response closely.
What other medicines interact with Bosentan?
MediHelp also lists interactions of Bosentan with, for example, Cyclosporin, Cyclosporine, Glyburide. The full list is on the Bosentan page.
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