Drug interactions
Influenza virus vaccine quadrivalent adjuvanted + Natalizumab
Severity: Minor
Influenza virus vaccine quadrivalent adjuvanted and Natalizumab: 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
Natalizumab may modestly reduce vaccine responses, although studies suggest that antibody responses to inactivated influenza vaccine are largely preserved. The vaccine is not unsafe in this setting and its benefit generally outweighs the possible reduced response.
What this interaction means in plain words
Influenza virus vaccine quadrivalent adjuvanted and Natalizumab have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Alpha-4 integrin blockade may slightly alter immune cell trafficking and response to vaccination.
What to do
Give the inactivated influenza vaccine as per routine schedules to patients on natalizumab. No change in natalizumab therapy is needed.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Influenza virus vaccine quadrivalent adjuvanted and Natalizumab, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Natalizumab
- Natalizumab + Vedolizumab Contraindicated
- Axicabtagene ciloleucel + Natalizumab Major
- Baricitinib + Natalizumab Major
- Belatacept + Natalizumab Major
- Brexucabtagene autoleucel + Natalizumab Major
- Cabazitaxel + Natalizumab Major
Frequently asked questions
Can I take Influenza virus vaccine quadrivalent adjuvanted with Natalizumab?
MediHelp rates the interaction as minor. Influenza virus vaccine quadrivalent adjuvanted and Natalizumab have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Natalizumab may modestly reduce vaccine responses, although studies suggest that antibody responses to inactivated influenza vaccine are largely preserved. The vaccine is not unsafe in this setting and its benefit generally outweighs the possible reduced response.
How serious is the interaction between Influenza virus vaccine quadrivalent adjuvanted and Natalizumab?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Give the inactivated influenza vaccine as per routine schedules to patients on natalizumab. No change in natalizumab therapy is needed.
What other medicines interact with Natalizumab?
MediHelp also lists interactions of Natalizumab with, for example, Vedolizumab, Axicabtagene ciloleucel, Baricitinib. The full list is on the Natalizumab page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
