Xolair 150mg injection contains an active component called Omalizumab. This medicine belongs to monoclonal antibodies. This medication is used to treat allergic asthma, chronic rhinosinusitis (inflammation of the nose and sinuses) with nasal polyps, and chronic spontaneous urticaria (CSU). Inform your doctor if you are allergic to Xolair 150mg injection or any of the ingredients that are allergic to latex because the needle cap of the syringe may contain latex. Before using Xolair 150mg injection, it's crucial to consult your doctor if you have kidney or liver problems or suffer from an autoimmune disease.