Drug interactions
Antithymocyte globulin rabbit + Leflunomide
Severity: Major
Antithymocyte globulin rabbit and Leflunomide: 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
Rabbit antithymocyte globulin depletes T cells profoundly, and leflunomide adds further suppression of lymphocyte proliferation. Infection risk and the chance of cytopenias are increased.
What this interaction means in plain words
Antithymocyte globulin rabbit and Leflunomide 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.
Why it happens
Additive immunosuppression from T-cell depletion and inhibition of pyrimidine synthesis.
What to do
Avoid combining where possible. If used together, monitor for infection and check blood counts regularly.
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
Frequently asked questions
Can I take Antithymocyte globulin rabbit with Leflunomide?
MediHelp rates the interaction as major. Antithymocyte globulin rabbit and Leflunomide 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. Rabbit antithymocyte globulin depletes T cells profoundly, and leflunomide adds further suppression of lymphocyte proliferation. Infection risk and the chance of cytopenias are increased.
How serious is the interaction between Antithymocyte globulin rabbit and Leflunomide?
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 for infection and check blood counts regularly.
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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