Drug interactions
Leflunomide + Ublituximab
Severity: Major
Leflunomide 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
Both drugs suppress immune function, so combined use may increase the risk of serious infections. The risk is greater because leflunomide's active metabolite persists for a long time.
What this interaction means in plain words
Leflunomide 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.
Leflunomide belongs to Musculoskeletal; Ublituximab belongs to Miscellaneous.
Why it happens
Additive immunosuppression from B-cell depletion by ublituximab and lymphocyte antiproliferation by leflunomide.
What to do
Avoid combining where possible. If used together, monitor closely for infection, and consider the long persistence of teriflunomide, using accelerated elimination if needed.
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 Leflunomide
- Bcg vaccine live + Leflunomide Contraindicated
- Influenza virus vaccine quadrivalent intranasal + Leflunomide Contraindicated
- Leflunomide + Measles mumps and rubella vaccine live Contraindicated
- Leflunomide + Measles mumps rubella and varicella vaccine live Contraindicated
- Leflunomide + Measles vaccine Contraindicated
- Leflunomide + Smallpox vaccine live Contraindicated
Other interactions of Ublituximab
Frequently asked questions
Can I take Leflunomide with Ublituximab?
MediHelp rates the interaction as major. Leflunomide 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. Both drugs suppress immune function, so combined use may increase the risk of serious infections. The risk is greater because leflunomide's active metabolite persists for a long time.
How serious is the interaction between Leflunomide 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. If used together, monitor closely for infection, and consider the long persistence of teriflunomide, using accelerated elimination if needed.
What other medicines interact with Leflunomide?
MediHelp also lists interactions of Leflunomide with, for example, Bcg vaccine live, Influenza virus vaccine quadrivalent intranasal, Measles mumps and rubella vaccine live. The full list is on the Leflunomide page.
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