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Drug interactions

Famciclovir + Ublituximab

Severity: Minor

Famciclovir and Ublituximab: 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

Ublituximab depletes B cells and increases susceptibility to infections including herpesviruses. Famciclovir itself is not affected pharmacokinetically, but patients remain at infection risk.

What this interaction means in plain words

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

Famciclovir belongs to Anti Virals; Ublituximab belongs to Miscellaneous.

Evidence level: Low

Why it happens

Immunosuppression from B-cell depletion by ublituximab; no direct pharmacokinetic interaction.

What to do

Continue famciclovir when indicated and monitor for herpes infections during ublituximab therapy.

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 Famciclovir with Ublituximab?

MediHelp rates the interaction as minor. Famciclovir and Ublituximab have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Ublituximab depletes B cells and increases susceptibility to infections including herpesviruses. Famciclovir itself is not affected pharmacokinetically, but patients remain at infection risk.

How serious is the interaction between Famciclovir and Ublituximab?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Continue famciclovir when indicated and monitor for herpes infections during ublituximab therapy.

What other medicines interact with Famciclovir?

MediHelp also lists interactions of Famciclovir with, for example, Talimogene laherparepvec, Varicella virus vaccine live, Zoster vaccine live. The full list is on the Famciclovir page.

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

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