Drug interactions
Azathioprine + Pretomanid
Severity: Major
Azathioprine 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 liver toxicity, and azathioprine can also cause hepatic injury. Using them together raises the risk of hepatotoxicity.
What this interaction means in plain words
Azathioprine 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.
Azathioprine belongs to Gastrointestinal Tract; Pretomanid belongs to Anti Bacterial.
Why it happens
Additive hepatotoxicity from two drugs with independent liver injury potential.
What to do
Avoid azathioprine during pretomanid regimens when possible. If both are needed, monitor liver enzymes and bilirubin regularly and interrupt therapy if significant injury develops.
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 Azathioprine
- Adenovirus types 4 and 7 live + Azathioprine Contraindicated
- Azathioprine + Bcg vaccine live Contraindicated
- Azathioprine + Febuxostat Contraindicated
- Azathioprine + Influenza virus vaccine quadrivalent intranasal Contraindicated
- Azathioprine + Measles mumps and rubella vaccine Contraindicated
- Azathioprine + Measles mumps and rubella vaccine live Contraindicated
Other interactions of Pretomanid
Frequently asked questions
Can I take Azathioprine with Pretomanid?
MediHelp rates the interaction as major. Azathioprine 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 liver toxicity, and azathioprine can also cause hepatic injury. Using them together raises the risk of hepatotoxicity.
How serious is the interaction between Azathioprine 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 azathioprine during pretomanid regimens when possible. If both are needed, monitor liver enzymes and bilirubin regularly and interrupt therapy if significant injury develops.
What other medicines interact with Azathioprine?
MediHelp also lists interactions of Azathioprine with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Febuxostat. The full list is on the Azathioprine page.
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