Drug interactions
Rituximab + Rozanolixizumab
Severity: Moderate
Rituximab 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 lowers circulating IgG and may accelerate clearance of IgG-based antibodies such as rituximab. Rituximab exposure and effect could therefore be reduced.
What this interaction means in plain words
Rituximab 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.
Rituximab belongs to Musculoskeletal; Rozanolixizumab belongs to Miscellaneous.
Why it happens
FcRn blockade increases catabolism of IgG monoclonal antibodies, lowering rituximab exposure.
What to do
Monitor for reduced rituximab effect, for example B-cell counts and disease response. If rituximab is essential long-term, consider an alternative to rozanolixizumab.
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?
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Other interactions of Rituximab
Other interactions of Rozanolixizumab
- Rozanolixizumab + Upadacitinib Major
- Abatacept + Rozanolixizumab Moderate
- Adalimumab + Rozanolixizumab Moderate
- Ado-trastuzumab + Rozanolixizumab Moderate
- Basiliximab + Rozanolixizumab Moderate
- Bevacizumab + Rozanolixizumab Moderate
Frequently asked questions
Can I take Rituximab with Rozanolixizumab?
MediHelp rates the interaction as moderate. Rituximab 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 lowers circulating IgG and may accelerate clearance of IgG-based antibodies such as rituximab. Rituximab exposure and effect could therefore be reduced.
How serious is the interaction between Rituximab 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 reduced rituximab effect, for example B-cell counts and disease response. If rituximab is essential long-term, consider an alternative to rozanolixizumab.
What other medicines interact with Rituximab?
MediHelp also lists interactions of Rituximab with, for example, Adenovirus types 4 and 7 live, Baricitinib, Certolizumab pegol. The full list is on the Rituximab page.
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