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Drug interactions

Guselkumab + Ublituximab

Severity: Moderate

Guselkumab and Ublituximab: 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

Ublituximab depletes B cells, while guselkumab blocks IL-23. Used together they may increase the risk of infections, although there is no specific evidence of a combined effect.

What this interaction means in plain words

Guselkumab and Ublituximab 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; Ublituximab belongs to Miscellaneous.

Evidence level: Low

Why it happens

Additive immunosuppression from B-cell depletion (anti-CD20) and IL-23 inhibition.

What to do

Avoid routine combination where possible; if used, monitor for signs of infection and consider the prolonged B-cell depletion effect of ublituximab when timing therapy.

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 Ublituximab?

MediHelp rates the interaction as moderate. Guselkumab and Ublituximab 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. Ublituximab depletes B cells, while guselkumab blocks IL-23. Used together they may increase the risk of infections, although there is no specific evidence of a combined effect.

How serious is the interaction between Guselkumab and Ublituximab?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid routine combination where possible; if used, monitor for signs of infection and consider the prolonged B-cell depletion effect of ublituximab when timing therapy.

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.

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

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