Comprehensive medication guide to Serevent including estimated pricing, availability information, side effects, and how to find it in stock at your local pharmacy.
Estimated Insurance Pricing
$35–$100 copay per fill for most commercial plans, where Serevent is typically placed on Tier 3 (non-preferred brand); prior authorization is frequently required. Commercially insured patients can reduce cost to $35/fill with the GSK copay coupon.
Estimated Cash Pricing
$420–$557 retail for Serevent Diskus (brand-only, 60 inhalations); as low as $378–$406 with GoodRx or SingleCare discount cards. No generic is available as of 2026. Commercially insured patients may pay as little as $35/month with the GSK coupon.
Medfinder Findability Score
72/100
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Serevent Diskus is the brand name for salmeterol xinafoate inhalation powder, a prescription medication made by GlaxoSmithKline (GSK). It was first approved by the FDA in 1994 and is classified as a long-acting beta-2 adrenergic agonist (LABA). Each inhalation delivers 50 mcg of salmeterol through a breath-activated Diskus dry powder inhaler.
Serevent is FDA-approved for three indications: maintenance treatment of asthma (ages 4+, always used with an inhaled corticosteroid), maintenance treatment of COPD (including chronic bronchitis and emphysema) in adults, and prevention of exercise-induced bronchospasm (ages 4+). It is a maintenance medication — not a rescue inhaler — and provides approximately 12 hours of bronchodilation per dose.
As of 2026, no FDA-approved generic version of Serevent Diskus exists, making it one of the more expensive standalone LABA inhalers available. Patients with commercial insurance can access the GSK $35/month copay coupon, while uninsured and underinsured patients may qualify for the GSK Access Patient Assistance Program.
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Salmeterol is a selective long-acting beta-2 adrenergic agonist. It works by binding to beta-2 receptors on the smooth muscle cells that surround the airways in the lungs. This binding activates adenylyl cyclase, increasing cyclic AMP (cAMP) levels, which activates protein kinase A and inhibits myosin light chain kinase — ultimately causing smooth muscle relaxation and airway widening (bronchodilation).
Salmeterol's unique lipophilic side chain anchors it to an 'exosite' adjacent to the beta-2 receptor on the cell membrane, giving it its characteristic 12-hour duration of action. This is why it takes 15–30 minutes to reach full effect (slower onset than albuterol) but provides sustained bronchodilation throughout the day. Salmeterol is approximately 10 times more potent than albuterol with a beta-2/beta-1 selectivity ratio of 50,000:1.
In addition to relaxing airway smooth muscle, salmeterol inhibits mast cell mediators including histamine, leukotrienes, and prostaglandins, contributing secondary anti-inflammatory effects. However, this secondary anti-inflammatory activity does not replace the need for an inhaled corticosteroid (ICS) in asthma patients — ICS provides the primary anti-inflammatory treatment that salmeterol alone cannot adequately provide.
50 mcg/inhalation — Diskus dry powder inhaler
1 inhalation twice daily (~12 hrs apart) for asthma/COPD maintenance; 1 inhalation 30 min before exercise for EIB prevention
Serevent Diskus is not on the FDA's official drug shortage list in 2026. GlaxoSmithKline manufactures and distributes it nationally. However, individual pharmacies — particularly smaller independent locations — may not keep it in stock routinely because it's a specialty brand with moderate demand compared to higher-volume combination ICS/LABA inhalers.
The bigger access barriers are its brand-only status (no generic) and the resulting high cash price ($420–$557/inhaler), combined with insurance restrictions including prior authorization requirements and non-preferred tier placement. Major chain pharmacies (CVS, Walgreens, Walmart, Kroger) generally carry it, while some independent pharmacies only order it on demand.
If you're having trouble locating Serevent at your pharmacy, medfinder calls pharmacies near you to find which ones have it in stock and texts you the results.
Serevent Diskus is not a controlled substance, so it requires no special DEA prescribing authority beyond standard licensure. Any licensed prescriber in the United States can prescribe it. It is most commonly prescribed by respiratory specialists but is regularly managed by primary care providers for stable patients.
Pulmonologists: Most common specialists for Serevent prescriptions, particularly for COPD and severe or difficult-to-control asthma
Allergists/Immunologists: Commonly prescribe for allergic asthma requiring LABA therapy
Primary Care Physicians (PCPs): Prescribe for both asthma and COPD maintenance, most accessible for established patients
Nurse Practitioners (NPs) and Physician Assistants (PAs): Can prescribe in most states; often available with shorter appointment wait times
Pediatricians: Can prescribe for children ages 4+ with asthma
Telehealth availability: Because Serevent is not a controlled substance, it can be prescribed via telehealth in all 50 states without additional restrictions. This makes it accessible for refills and ongoing management through platforms like Teladoc, MDLive, PlushCare, and Sesame. New diagnoses of asthma or COPD typically require in-person pulmonary function testing before initiating LABA therapy.
No. Serevent Diskus (salmeterol xinafoate) is not a controlled substance. It is not listed on the DEA's schedule of controlled substances (Schedules I–V). This means there are no restrictions on the number of refills, no special prescribing authority required, and no state-specific controlled substance rules that apply.
Any licensed prescriber — including primary care physicians, nurse practitioners, physician assistants, and specialists — can write a prescription for Serevent without DEA registration beyond standard prescribing authority. Serevent can also be prescribed via telehealth platforms in all 50 states without the additional restrictions that apply to controlled substances.
While Serevent carries an important FDA black box warning about increased risk of asthma-related death when used without an inhaled corticosteroid in asthma patients, this is a safety warning — not a controlled substance designation. The restriction is clinical, not regulatory: patients with asthma must use Serevent in combination with a separate ICS inhaler.
Most patients tolerate Serevent Diskus well at recommended doses. The following side effects are commonly reported:
Headache
Pharyngitis (sore throat)
Rhinitis (stuffy or runny nose)
Tremor (mild shaking, especially of hands)
Palpitations
Cough
Nausea and diarrhea (less common)
Muscle cramps
Increased asthma-related death risk (BLACK BOX WARNING): Serevent used alone for asthma without ICS increases asthma-related mortality. Always use with a separate ICS inhaler.
Paradoxical bronchospasm: Worsening breathing immediately after inhalation. Stop medication and use rescue inhaler. Call 911 if severe.
Cardiovascular effects: QTc prolongation, cardiac arrhythmias (mainly with overdose or drug interactions)
Hypokalemia: Low blood potassium, especially with concurrent diuretics
Hypersensitivity reactions: Anaphylaxis, urticaria, angioedema (rare). Note: inhaler contains milk proteins.
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Wixela Inhub (generic fluticasone/salmeterol)
Contains the same LABA (salmeterol) plus fluticasone ICS in one inhaler. Much more affordable than Serevent alone plus a separate ICS. Available in multiple strengths.
Generic budesonide/formoterol (Symbicort generic)
ICS/LABA combination with formoterol (different LABA with faster onset). Most cost-accessible option with broad formulary coverage. $30–$80 with coupons.
Breo Ellipta (fluticasone furoate/vilanterol)
Once-daily ICS/LABA combination. Approved for asthma (ages 18+) and COPD. May improve adherence with once-daily dosing.
Formoterol (Foradil Aerolizer)
Standalone LABA with faster onset than salmeterol. Approved for asthma (with ICS) and COPD. Twice-daily DPI.
Prefer Serevent? We can find it.
HIV protease inhibitors (ritonavir, darunavir, lopinavir)
majorContraindicated — potent CYP3A4 inhibitors that dramatically increase salmeterol levels, risking QT prolongation and cardiac arrhythmias.
Cobicistat (Stribild, Genvoya)
majorContraindicated — CYP3A4 inhibitor; increases salmeterol levels with risk of serious cardiovascular toxicity.
MAO inhibitors (phenelzine, tranylcypromine)
majorAvoid — potentiate cardiovascular effects of salmeterol; risk of severe hypertension and arrhythmias.
Beta-blockers (metoprolol, propranolol, carvedilol)
moderateUse with caution — can block bronchodilatory effects and cause severe bronchospasm. Prefer beta-1 selective agents if needed.
Tricyclic antidepressants (amitriptyline, clomipramine)
moderateAvoid — may increase cardiovascular effects; both can prolong QT interval.
Non-potassium-sparing diuretics (furosemide, HCTZ)
moderateUse with caution — combined hypokalemia risk (salmeterol shifts K+ into cells + diuretic losses).
QT-prolonging drugs (antipsychotics, azithromycin, fluoroquinolones)
moderateAdditive QTc prolongation risk. ECG monitoring warranted if coadministered.
Strong CYP3A4 inducers (apalutamide, rifampin)
minorMay reduce salmeterol effectiveness by increasing its metabolism.
Serevent Diskus (salmeterol) is a well-established, effective long-acting bronchodilator that has been used for asthma and COPD management since its 1994 FDA approval. When used correctly — always with an inhaled corticosteroid for asthma patients — it provides reliable 12-hour bronchodilation that helps patients breathe easier and maintain normal activity levels. Its safety profile is well-understood after decades of clinical use.
The main challenge with Serevent in 2026 is access, not efficacy. Without a generic version, the cash price is steep. However, the GSK $35 monthly copay coupon (for commercially insured patients) and the GSK Access Patient Assistance Program (for uninsured/underinsured patients) significantly reduce financial barriers. Patients who find pharmacy stock an issue should reorder before running low and use a pharmacy locator service.
If you've been prescribed Serevent and are having trouble filling it, medfinder can call pharmacies near you and find which ones have it in stock, saving you hours of calling around on your own.
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