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Drug interactions

Mycophenolate mofetil + Typhoid polysaccharide vaccine

Severity: Moderate

Mycophenolate mofetil and Typhoid polysaccharide vaccine: 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

Mycophenolate may reduce the antibody response to the inactivated typhoid polysaccharide vaccine. Travellers may be less protected than expected.

What this interaction means in plain words

Mycophenolate mofetil and Typhoid polysaccharide vaccine 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

IMPDH inhibition reduces B cell and T cell proliferation and antibody responses.

What to do

Give the vaccine at least 2 weeks before travel, and ideally before immunosuppression. Advise strict food and water precautions.

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 Mycophenolate mofetil with Typhoid polysaccharide vaccine?

MediHelp rates the interaction as moderate. Mycophenolate mofetil and Typhoid polysaccharide vaccine 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. Mycophenolate may reduce the antibody response to the inactivated typhoid polysaccharide vaccine. Travellers may be less protected than expected.

How serious is the interaction between Mycophenolate mofetil and Typhoid polysaccharide vaccine?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Give the vaccine at least 2 weeks before travel, and ideally before immunosuppression. Advise strict food and water precautions.

What other medicines interact with Mycophenolate mofetil?

MediHelp also lists interactions of Mycophenolate mofetil with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Influenza virus vaccine quadrivalent intranasal. The full list is on the Mycophenolate mofetil page.

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