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Drug interactions

Anthrax vaccine + Azathioprine

Severity: Moderate

Anthrax vaccine and Azathioprine: 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

Anthrax vaccine is non-live, so no vaccine infection is expected. Azathioprine may lower the antibody response and reduce protection.

What this interaction means in plain words

Anthrax vaccine and Azathioprine 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.

Evidence level: Low

Why it happens

Azathioprine suppresses lymphocyte proliferation, reducing antibody production.

What to do

Vaccinate when indicated, as the vaccine is not live. Where possible vaccinate before starting azathioprine, and consider checking antibody response in high-risk exposure.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Anthrax vaccine with Azathioprine?

MediHelp rates the interaction as moderate. Anthrax vaccine and Azathioprine 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. Anthrax vaccine is non-live, so no vaccine infection is expected. Azathioprine may lower the antibody response and reduce protection.

How serious is the interaction between Anthrax vaccine and Azathioprine?

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 when indicated, as the vaccine is not live. Where possible vaccinate before starting azathioprine, and consider checking antibody response in high-risk exposure.

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

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