Video lesson
Animated explainer
What it’s used for
Still’s disease, periodic fever syndromes and gout flares in people who cannot use usual treatments.
How it works
An antibody that neutralizes IL-1 beta, a key driver of fever and crystal-related inflammation.
How it’s taken
An injection under the skin every 4 to 8 weeks, or as a single dose for a gout flare.
Side effects
Infections, injection-site reactions and low white counts.
Monitoring
TB screening and blood counts.
Good to know
Avoid live vaccines during treatment.
At a glance
Class
Biologics
Brand names
Ilaris
Reviewed by Farhan Tahir, MD, FACR
Questions about your own care?
Book an in-person or telehealth consultation with Dr. Tahir.
For education only. Don’t start, stop or change a medicine without talking to your care team.