DOSING & ADMINISTRATION

The first and only ultra-long-acting asthma biologic with just 2 doses per year*

*1 dose every 6 months.

Confidence with in-office administration with just 2 doses a year

EXDENSUR syringe

In-office administration allows you to confidently deliver 6 months of therapy with every injection

EXDENSUR should be administered by a healthcare professional. The recommended dosage of EXDENSUR is 100 mg for severe asthma with an eosinophilic phenotype in patients 12+ years. EXDENSUR is administered once every 6 months by subcutaneous (SC) injection into the upper arm, thigh, or abdomen.*

For more details, please see Dosage and Administration in the EXDENSUR Prescribing Information.

* Avoid 2 inches (5 cm) around the navel.

Administration FAQs

    EXDENSUR offers the fewest injections per year of any asthma biologic1-6

    Just 1 dose every 6 months.

    EXDENSUR dosing frequency compared to select asthma biologics

    No comparative efficacy or safety conclusions can be drawn from this information.

    Based on the first year of treatment in patients ≥12 years.

    EXDENSUR should be administered by a healthcare professional.

    The recommended dosage of EXDENSUR is 100 mg administered once every 6 months by subcutaneous (SC) injection into the upper arm, thigh, or abdomen.

    More to explore:

    Designed to be ultra-long-acting

    Learn about the antibody properties of EXDENSUR that allow for dosing every 6 months.

    Access & Support

    Find support materials and insurance information to help your patients access EXDENSUR.

    Safety

    Learn more about the established safety profile of EXDENSUR from two phase 3 clinical trials.

    Indication & Safety Info

    Indication

    Important Safety Information

    Indication

    EXDENSUR is indicated for the add-on maintenance treatment of severe asthma, characterized by an eosinophilic phenotype, in adult and pediatric patients aged 12 years and older. EXDENSUR is not indicated for the relief of acute bronchospasm or status asthmaticus.

    Important Safety Information

    WARNINGS AND PRECAUTIONS

    Hypersensitivity Reactions
    Hypersensitivity reactions, including anaphylaxis, can occur following administration of EXDENSUR. If a hypersensitivity reaction occurs, discontinue EXDENSUR and initiate appropriate therapy.

    Acute Asthma Symptoms or Deteriorating Disease
    EXDENSUR should not be used to treat acute asthma symptoms or acute exacerbations.

    Risk Associated with Abrupt Reduction of Corticosteroid Dosage
    Upon initiation of EXDENSUR therapy, do not abruptly discontinue systemic or inhaled corticosteroids. Reductions in corticosteroid dose, if appropriate, should be gradual and under the supervision of a healthcare provider. Reduction in corticosteroid dose may be associated with systemic withdrawal symptoms and/or unmask conditions previously suppressed by systemic corticosteroid therapy.

    Parasitic (Helminth) Infection
    Patients with pre-existing helminth infections should be treated for their infection prior to initiation of EXDENSUR therapy. If patients become infected while receiving EXDENSUR and do not respond to anti-helminth treatment, discontinue EXDENSUR until the infection resolves.

    ADVERSE REACTIONS

    In patients receiving EXDENSUR, the most common adverse reactions (≥4%) were upper respiratory tract infection, allergic rhinitis, influenza, arthralgia, and pharyngitis. Injection site reactions have also occurred. 

    USE IN SPECIFIC POPULATIONS

    The data in pregnant women are insufficient to identify a drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes. Transport of endogenous IgG antibodies and monoclonal antibodies, such as depemokimab-ulaa, across the placenta increases as pregnancy progresses and peaks during the third trimester.

    EXDENSUR can cross the placenta during pregnancy and the presence of the YTE modification may prolong and increase exposure to the infant exposed in utero. The impact of transmission to the fetus should be considered. Pregnant women exposed to EXDENSUR, or their healthcare providers, should report EXDENSUR exposure by calling 1-888-825-5249.

    Please see full Prescribing Information for EXDENSUR.

    To report SUSPECTED ADVERSE REACTIONS, contact GSK at gsk.public.reportum.com or 1-888-825-5249 or
    FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

    References

    1. Singh D, Fuhr R, Bird NP, et al. A phase 1 study of the long-acting anti-IL-5 monoclonal antibody GSK3511294 in patients with asthma. Br J Clin Pharmacol. 2022;88:702-712. doi:10.1111/bcp.15002

    2. Fasenra [Prescribing Information]. Wilmington, DE: AstraZeneca Pharmaceuticals, LP; 2024.

    3. Tezspire [Prescribing Information]. Thousand Oaks, CA: Amgen Inc.; 2025.

    4. Dupixent [Prescribing Information]. Tarrytown, NY: Regeneron Pharmaceuticals, Inc.; 2024.

    5. Cinqair [Prescribing Information]. West Chester, PA: Teva Respiratory, LLC; 2020.

    6. Xolair [Prescribing Information]. San Francisco, CA: Genentech, Inc.; 2025.