Genentech USA, Inc. and Novartis Pharmaceuticals Corporation

Xolair is a pharmaceutical company based in the United States that develops and markets a self-administered treatment for various medical conditions, including allergic asthma, chronic rhinosinusitis with nasal polyps, chronic spontaneous urticaria, and food allergy. The company provides detailed information about the indications, usage, safety, and prescribing information for its product on its website.