Drug interactions
Azathioprine + Pneumococcal vaccine polyvalent
Severity: Moderate
Azathioprine and Pneumococcal vaccine polyvalent: moderate 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
Azathioprine can reduce antibody responses to polyvalent pneumococcal vaccine, leaving suboptimal protection in patients at higher infection risk.
What this interaction means in plain words
Azathioprine and Pneumococcal vaccine polyvalent can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Azathioprine impairs lymphocyte proliferation and humoral responses to vaccination.
What to do
Vaccinate per guidelines for immunosuppressed patients, using a conjugate vaccine followed by polysaccharide vaccine where recommended.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Azathioprine and Pneumococcal vaccine polyvalent, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
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
Frequently asked questions
Can I take Azathioprine with Pneumococcal vaccine polyvalent?
MediHelp rates the interaction as moderate. Azathioprine and Pneumococcal vaccine polyvalent can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Azathioprine can reduce antibody responses to polyvalent pneumococcal vaccine, leaving suboptimal protection in patients at higher infection risk.
How serious is the interaction between Azathioprine and Pneumococcal vaccine polyvalent?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Vaccinate per guidelines for immunosuppressed patients, using a conjugate vaccine followed by polysaccharide vaccine where recommended.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
