Targeted biologic therapy for patients with difficult-to-control asthma
About This Service
Several injectable biologic medications have revolutionized asthma control for patients with severe or uncontrolled asthma. These targeted therapies work by blocking specific immune pathways that drive airway inflammation. Dr. Hsieh evaluates your asthma phenotype, determines eligibility, and can initiate and manage biologic therapy in our office. Many patients experience significant reductions in asthma attacks and improved quality of life.
Patients with moderate-to-severe asthma that remains uncontrolled despite using two or more controller inhalers, those experiencing frequent asthma exacerbations or emergency room visits, and patients requiring oral corticosteroids to manage their asthma. Biologics target the specific immune pathways driving your inflammation, which is why standard inhalers alone may not be sufficient for your asthma type. An evaluation will determine which biologic medication is most appropriate.
Reviewed by Dr. Jerry Hsieh, MD — Board Certified in Pulmonary Medicine, Critical Care Medicine, and Internal Medicine
Last reviewed:
Common Questions
Who is a candidate for biologic asthma medications?
Patients with severe asthma that remains uncontrolled despite high-dose inhaled corticosteroids plus a long-acting bronchodilator, those who have had two or more asthma exacerbations requiring oral steroids in the past year, frequent emergency department visits or hospitalizations for asthma, or those dependent on oral steroids for control. Eligibility for specific biologics also depends on your asthma phenotype, identified through blood eosinophil counts, IgE levels, FeNO testing, and allergy testing.
What biologic medications are currently available for asthma?
FDA-approved biologics for severe asthma include omalizumab (Xolair) for allergic asthma, mepolizumab (Nucala), reslizumab (Cinqair), and benralizumab (Fasenra) for eosinophilic asthma, dupilumab (Dupixent) for type 2 / eosinophilic asthma, and tezepelumab (Tezspire) for severe asthma regardless of phenotype. Dr. Hsieh matches the right biologic to your asthma type based on the underlying immune pathway driving your inflammation.
How are biologics administered, and how often?
Most biologics are given as subcutaneous injections every 2, 4, or 8 weeks depending on the specific medication and dose. Some can be self-administered at home after initial training; others are administered in our office. Treatment is typically long-term, with ongoing monitoring of asthma control, lung function, and exacerbation frequency to assess response.
How long does it take to see improvement?
Most patients notice meaningful improvement in asthma control within 3–4 months of starting a biologic, though some respond within weeks. Dr. Hsieh reassesses your response at the 4-month and 12-month marks. If your asthma has not improved as expected, switching to a different biologic targeting a different pathway is often successful.
Schedule an Appointment
Contact our office or request an appointment online to get started.
