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Drug interactions

Interferon beta 1b + Ublituximab

Severity: Moderate

Interferon beta 1b 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 and interferon beta has immunomodulatory effects, so concurrent use may increase susceptibility to infection. The two are not usually combined, as ublituximab is itself a disease-modifying therapy for multiple sclerosis.

What this interaction means in plain words

Interferon beta 1b 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.

Interferon beta 1b belongs to Central Nervous System; Ublituximab belongs to Miscellaneous.

Evidence level: Low

Why it happens

Additive immunomodulation from B-cell depletion and interferon-mediated effects.

What to do

Avoid routine combination and stop interferon beta when ublituximab is started; monitor for infection if overlap occurs.

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 Interferon beta 1b with Ublituximab?

MediHelp rates the interaction as moderate. Interferon beta 1b 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 and interferon beta has immunomodulatory effects, so concurrent use may increase susceptibility to infection. The two are not usually combined, as ublituximab is itself a disease-modifying therapy for multiple sclerosis.

How serious is the interaction between Interferon beta 1b 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 and stop interferon beta when ublituximab is started; monitor for infection if overlap occurs.

What other medicines interact with Interferon beta 1b?

MediHelp also lists interactions of Interferon beta 1b with, for example, Axicabtagene ciloleucel, Brexucabtagene autoleucel, Ciltacabtagene autoleucel. The full list is on the Interferon beta 1b page.

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