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What is Ilaris?

Ilaris is an IL-1β monoclonal antibody approved for several hereditary periodic fever syndromes — including FMF, TRAPS, HIDS/MKD, and CAPS. By specifically blocking IL-1β, a key inflammatory cytokine driving periodic fever attacks, it can substantially reduce attack frequency and prevent the long-term complications of untreated autoinflammatory disease such as amyloidosis. Coordination with rheumatology is common for ongoing management.

What it treats

Ilaris is FDA-approved for the following indications:

  • Cryopyrin-Associated Periodic Syndromes (CAPS), including FCAS and Muckle-Wells syndrome
  • Familial Mediterranean Fever (FMF)
  • TNF Receptor-Associated Periodic Syndrome (TRAPS)
  • Hyperimmunoglobulin D Syndrome / Mevalonate Kinase Deficiency (HIDS/MKD)
  • Active Still's disease, including adult-onset Still's disease (AOSD) and systemic juvenile idiopathic arthritis (sJIA)
  • Gout flares in adults for whom NSAIDs and colchicine are contraindicated, not tolerated, or ineffective

Optimed Immunology prescribes Ilaris in the context of autoinflammatory and periodic fever syndromes. Still's disease and gout flare indications are typically managed with or by rheumatology; the practice coordinates rather than duplicates that care.

How it is administered

Ilaris is administered subcutaneously, with dosing frequency depending on the specific indication and patient response. Most patients receive injections every 4 to 8 weeks. Coordination with rheumatology is part of standard care.

Patient assistance & support

The manufacturer offers a patient support program — Novartis Patient Assistance Now — that can help with insurance navigation, copay assistance for eligible patients, nursing support, and ongoing education. More information is available at https://www.pharma.us.novartis.com/patient-support.

Coordination at Optimed Immunology

Treatment with Ilaris is initiated and monitored by Dr. McNeil. Prior authorizations are handled in-house — patients are not asked to navigate insurance approvals on their own. This is a subcutaneous self-administered medication. After prior authorization, the prescription is sent to a specialty pharmacy that ships the medication directly to the patient. A manufacturer-sponsored nurse or office-based training visit is typically arranged for the first dose so patients are confident with self-administration before continuing at home.

A note on age: The FDA indications above may include pediatric or adolescent age groups. Optimed Immunology's clinical practice is focused on adults. If you are seeking care for a minor, please contact the office and we can advise on referral options.

Important safety note: This page is not a substitute for the FDA prescribing information. Risks, contraindications, drug interactions, and required monitoring vary by patient. The official manufacturer website (https://www.ilaris.com) provides the most current full prescribing and safety information. Treatment decisions and monitoring are individualized — please discuss with Dr. McNeil whether Ilaris is appropriate for your situation.

Medically reviewed

Donald L. McNeil, MD · Board Certified in Allergy & Immunology and Internal Medicine

Last reviewed: November 2025 · Sources: FDA prescribing information · manufacturer label · AAAAI · ACAAI · relevant clinical guidelines

This page is provided for educational purposes only and is not medical advice. If you have an emergency, call 911.

Have questions about Ilaris?

Treatment selection is a shared decision. Schedule a consultation with Dr. McNeil to discuss whether Ilaris is appropriate for you.