Drug interactions
Peginterferon alfa 2a + Pexidartinib
Severity: Major
Peginterferon alfa 2a and Pexidartinib: 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
Pexidartinib can cause serious and potentially fatal liver injury. Peginterferon alfa 2a is also hepatotoxic and can cause hepatic decompensation, so using both may increase liver injury risk.
What this interaction means in plain words
Peginterferon alfa 2a and Pexidartinib 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.
Peginterferon alfa 2a belongs to Anti Virals; Pexidartinib belongs to Oncology.
Why it happens
Additive hepatotoxicity from two agents that can each injure the liver.
What to do
Avoid the combination where possible. If unavoidable, monitor liver tests often and withhold either agent for significant elevations.
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 Peginterferon alfa 2a
Other interactions of Pexidartinib
Frequently asked questions
Can I take Peginterferon alfa 2a with Pexidartinib?
MediHelp rates the interaction as major. Peginterferon alfa 2a and Pexidartinib 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. Pexidartinib can cause serious and potentially fatal liver injury. Peginterferon alfa 2a is also hepatotoxic and can cause hepatic decompensation, so using both may increase liver injury risk.
How serious is the interaction between Peginterferon alfa 2a and Pexidartinib?
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 the combination where possible. If unavoidable, monitor liver tests often and withhold either agent for significant elevations.
What other medicines interact with Peginterferon alfa 2a?
MediHelp also lists interactions of Peginterferon alfa 2a with, for example, Clozapine, Deferiprone, Hydroxyurea. The full list is on the Peginterferon alfa 2a page.
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