Drug interactions
Azathioprine + Ublituximab
Severity: Major
Azathioprine and Ublituximab: 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
Ublituximab depletes B cells while azathioprine suppresses lymphocyte proliferation, so combined use may increase the risk of serious infections.
What this interaction means in plain words
Azathioprine and Ublituximab 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; Ublituximab belongs to Miscellaneous.
Why it happens
Additive immunosuppression from anti-CD20 B-cell depletion and azathioprine lymphocyte suppression.
What to do
Avoid combining where possible, or monitor closely for infection and check blood counts regularly. Consider the duration of effect of each drug when sequencing therapy.
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 Ublituximab
Frequently asked questions
Can I take Azathioprine with Ublituximab?
MediHelp rates the interaction as major. Azathioprine and Ublituximab 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. Ublituximab depletes B cells while azathioprine suppresses lymphocyte proliferation, so combined use may increase the risk of serious infections.
How serious is the interaction between Azathioprine and Ublituximab?
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 combining where possible, or monitor closely for infection and check blood counts regularly. Consider the duration of effect of each drug when sequencing therapy.
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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