Drug interactions
Meningococcal group b vaccine + Natalizumab
Severity: Minor
Meningococcal group b vaccine 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 responses to some vaccines, which could mean less reliable protection after meningococcal B vaccination. The vaccine is non-live and can be given.
What this interaction means in plain words
Meningococcal group b vaccine 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
Immunomodulation by natalizumab may attenuate vaccine immune responses.
What to do
Give recommended vaccines ideally before starting natalizumab, but do not withhold vaccination in at-risk patients. Follow local guidance on serologic checks or boosters.
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?
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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 Meningococcal group b vaccine with Natalizumab?
MediHelp rates the interaction as minor. Meningococcal group b vaccine 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 responses to some vaccines, which could mean less reliable protection after meningococcal B vaccination. The vaccine is non-live and can be given.
How serious is the interaction between Meningococcal group b vaccine 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 recommended vaccines ideally before starting natalizumab, but do not withhold vaccination in at-risk patients. Follow local guidance on serologic checks or boosters.
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.
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