Symbicort vs Advair
The two most widely used combination preventer inhalers, and the key practical difference — only one is licensed to be used as a reliever as well.
At a glance
Key differences
- Same class. Both Symbicort and Advair are asthma & COPD inhalers, so they work through the same broad mechanism. Differences between them tend to be about dosing, route, how selective they are, and side effects rather than what they target.
- Time on the market. Symbicort was first approved by the FDA in 2006, Advair in 2000. That gives Advair roughly 6 more years of real-world use and long-term safety data.
- Who markets them. Symbicort is marketed by AstraZeneca; Advair by GlaxoSmithKline.
- Same drug, more than one brand. Fluticasone/salmeterol is sold as Advair / Seretide — the same active ingredient marketed under different brand names, typically for different approved uses or doses.
What each one treats
SYMBICORT is a combination product containing a corticosteroid and a long-acting beta 2 -adrenergic agonist indicated for: • Treatment of asthma in patients 6 years of age and older. ( 1.1 ) • Maintenance treatment of airflow obstruction and reducing exacerbations in patients with chronic obstructive pulmonary disease (COPD) including chronic bronchitis and/or emphysema. ( 1.2 ) Important limitations: • Not indicated for the relief of acute bronchospasm. ( 1.1 , 1.2 ) 1.1 Treatment of Asthma SYMBICORT is indicated for the treatment of asthma in patients 6 years of age and older. SYMBICORT should be used for patients not adequately controlled on a long-term asthma-control medication such as an inhaled corticosteroid (ICS) or whose disease warrants initiation of treatment with both an inhaled corticosteroid and long-acting beta2-adrenergic agonist (LABA). Important Limitations of Use: • S…
A combination inhaler for asthma and COPD.
How each one works
12.1 Mechanism of Action SYMBICORT SYMBICORT contains both budesonide and formoterol; therefore, the mechanisms of action described below for the individual components apply to SYMBICORT. These drugs represent two classes of medications (a synthetic corticosteroid and a long-acting selective beta 2 -adrenoceptor agonist) that have different effects on clinical, physiological, and inflammatory indices of COPD and asthma. Budesonide Budesonide is an anti-inflammatory corticosteroid that exhibits potent glucocorticoid activity and weak mineralocorticoid activity. In standard in vitro and animal models, budesonide has approximately a 200-fold higher affinity for the glucocorticoid receptor and …
A combination inhaler for asthma and COPD.
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Which medicine is right for a given person depends on their diagnosis, other conditions, other medicines, kidney and liver function, pregnancy, and cost or reimbursement — none of which this page knows. Two drugs in the same class are not automatically interchangeable. Never start, stop or switch a prescription medicine on the basis of a web page; that decision belongs to you and your clinician or pharmacist.
How this page is built
The facts on this page are pulled directly from official U.S. FDA datasets — they are not written from memory. Each field below names the dataset it came from, so you can check it yourself.
- FDA Drug Label (openFDA) ↗ Indications, mechanism of action and pharmacologic class
- Drugs@FDA ↗ First FDA approval date and the company holding the application
- FDA Drug Shortage Database ↗ Current US supply / shortage status
Plain-English summaries and drug-class explainers are written and reviewed by Sreepriya Prasannan (MSc Digital Transformation of Life Sciences (Innopharma Education / Griffith College); MSc & BSc Botany). Data is retrieved automatically from the sources above and cross-checked with AI-assisted verification (Anthropic's Claude) — brand and generic names are matched against the exact FDA product record so that a combination product or a different formulation cannot be mistaken for the drug on this page. An editor reviews the result before publication. We describe this in full in our editorial standards and corrections policy. The FDA data on this page was last retrieved on 10 Oct 2026. How every register is built: methodology · fixes we have made: corrections log.