Thank you for your interest in XOLAIR. In order to help get the right answers to your questions, we provide a few ways for you to contact us:

By Email

Visit to ask questions online.

By Phone

Please call us toll-free at (866) 4XOLAIR (1-866-496-5247) Monday through Friday, 8:30 AM to 5 PM ET.

Our hours of operation may vary during US holidays. In case of a medical emergency, please contact your physician immediately.

By Mail

You can also write to us at:

Customer Interaction Center
Novartis Pharmaceuticals Corporation
One Health Plaza
East Hanover, NJ 07936-1080

Once we've received your letter, we will mail a reply to you within 2 business days. Please allow for US Postal Service turnaround time. Response times may vary during US holiday periods.