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Drug interactions

Hepatitis A vaccine inactivated + Ustekinumab

Severity: Minor

Hepatitis A vaccine inactivated and Ustekinumab: minor 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

Ustekinumab may blunt the antibody response to inactivated vaccines, which could leave patients less protected. The vaccine is safe to give, but its effectiveness may be reduced.

What this interaction means in plain words

Hepatitis A vaccine inactivated and Ustekinumab have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Hepatitis A vaccine inactivated belongs to Anti Virals; Ustekinumab belongs to Gastrointestinal Tract.

Evidence level: Low

Why it happens

IL-12/23 inhibition may reduce immune responses to vaccine antigens.

What to do

Where possible, give the vaccine before starting ustekinumab. If given during therapy, consider checking antibody titers in high-risk patients.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

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 Hepatitis A vaccine inactivated with Ustekinumab?

MediHelp rates the interaction as minor. Hepatitis A vaccine inactivated and Ustekinumab have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Ustekinumab may blunt the antibody response to inactivated vaccines, which could leave patients less protected. The vaccine is safe to give, but its effectiveness may be reduced.

How serious is the interaction between Hepatitis A vaccine inactivated and Ustekinumab?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Where possible, give the vaccine before starting ustekinumab. If given during therapy, consider checking antibody titers in high-risk patients.

What other medicines interact with Ustekinumab?

MediHelp also lists interactions of Ustekinumab with, for example, Bcg vaccine live, Typhoid vaccine live, Adalimumab. The full list is on the Ustekinumab page.

Full monographs, dosing and an interaction checker in the MediHelp app

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