Are AirDuo and Advair the Same Drug?
No, AirDuo is not identical to Advair, but AirDuo RespiClick is the authorized generic version of Advair Diskus. Both deliver the same active ingredients—fluticasone propionate (a corticosteroid) and salmeterol (a long-acting beta agonist)—in identical strengths: 100/50 mcg, 250/50 mcg, and 500/50 mcg per inhalation. They treat asthma and COPD by reducing inflammation and relaxing airways.[1]
Key Differences in Delivery and Use
AirDuo uses a breath-actuated RespiClick inhaler without propellant, while Advair Diskus is a dry powder inhaler with a disk-shaped device. This makes AirDuo easier for some patients who struggle with coordination, as it activates on inhalation alone. Dosing is the same: one inhalation twice daily. AirDuo costs less, often $100-200 for a 30-day supply versus $400+ for brand-name Advair.[2]
Who Makes Them and Availability
Teva Pharmaceuticals manufactures AirDuo RespiClick, approved by the FDA in 2017 as the first generic Advair Diskus. GlaxoSmithKline (GSK) makes Advair. AirDuo is widely available at pharmacies; generics entered after GSK's patents expired in 2017-2019, though some litigation delayed full competition.[1][3]
When Does Advair Patent Protection End?
Advair Diskus composition-of-matter patents expired by 2010, but device and formulation patents extended exclusivity until 2016-2019. Multiple ANDA approvals followed, including Teva's in 2017. No major patents block generics now, per DrugPatentWatch.com.[4]
Effectiveness and Switching Concerns
Clinical studies show AirDuo matches Advair's lung function improvements and symptom control, with bioequivalence confirmed by FDA. Patients switching report similar efficacy, but some note a different taste or feel due to the inhaler. Consult a doctor before switching, especially for severe asthma.[1][2]
Common Side Effects Patients Report
Both carry the same risks: oral thrush (rinse mouth after use), hoarseness, pneumonia in COPD patients, fast heartbeat, and rare anaphylaxis. Long-term corticosteroid use raises osteoporosis or cataract risks. AirDuo's label matches Advair's warnings.[3]
Sources
[1]: FDA Approval Letter for AirDuo RespiClick
[2]: Drugs.com Comparison
[3]: Teva Product Information
[4]: DrugPatentWatch.com - Advair Patents