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Drug interactions

Guselkumab + Rozanolixizumab

Severity: Moderate

Guselkumab and Rozanolixizumab: 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

Rozanolixizumab blocks the neonatal Fc receptor, which normally recycles IgG antibodies and prolongs their half-life. Guselkumab is an IgG monoclonal antibody, so its exposure could be reduced and efficacy lessened.

What this interaction means in plain words

Guselkumab and Rozanolixizumab 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.

Guselkumab belongs to Miscellaneous; Rozanolixizumab belongs to Miscellaneous.

Evidence level: Low

Why it happens

FcRn blockade increases IgG catabolism, which may lower guselkumab concentrations.

What to do

Monitor for loss of guselkumab efficacy during and after rozanolixizumab cycles. Consider alternative therapy if long-term guselkumab response is lost.

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 Guselkumab with Rozanolixizumab?

MediHelp rates the interaction as moderate. Guselkumab and Rozanolixizumab 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. Rozanolixizumab blocks the neonatal Fc receptor, which normally recycles IgG antibodies and prolongs their half-life. Guselkumab is an IgG monoclonal antibody, so its exposure could be reduced and efficacy lessened.

How serious is the interaction between Guselkumab and Rozanolixizumab?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for loss of guselkumab efficacy during and after rozanolixizumab cycles. Consider alternative therapy if long-term guselkumab response is lost.

What other medicines interact with Guselkumab?

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

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