Drug interactions
Interferon beta 1b + Pretomanid
Severity: Major
Interferon beta 1b 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
The pretomanid-containing regimen is associated with hepatotoxicity, and labeling advises avoiding other hepatotoxic agents. Interferon beta can raise transaminases and occasionally cause liver injury. Combining them may increase the risk of liver damage.
What this interaction means in plain words
Interferon beta 1b 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.
Interferon beta 1b belongs to Central Nervous System; Pretomanid belongs to Anti Bacterial.
Why it happens
Additive hepatotoxicity from two agents that can each injure the liver.
What to do
Avoid concurrent use where possible and defer interferon beta during tuberculosis treatment. If unavoidable, monitor liver function tests regularly and stop the offending drugs if liver 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 Interferon beta 1b
Other interactions of Pretomanid
Frequently asked questions
Can I take Interferon beta 1b with Pretomanid?
MediHelp rates the interaction as major. Interferon beta 1b 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. The pretomanid-containing regimen is associated with hepatotoxicity, and labeling advises avoiding other hepatotoxic agents. Interferon beta can raise transaminases and occasionally cause liver injury. Combining them may increase the risk of liver damage.
How serious is the interaction between Interferon beta 1b 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 concurrent use where possible and defer interferon beta during tuberculosis treatment. If unavoidable, monitor liver function tests regularly and stop the offending drugs if liver injury develops.
What other medicines interact with Interferon beta 1b?
MediHelp also lists interactions of Interferon beta 1b with, for example, Axicabtagene ciloleucel, Brexucabtagene autoleucel, Ciltacabtagene autoleucel. The full list is on the Interferon beta 1b page.
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