Raw research findings for this medication. Mostly single studies, not curated or confirmed robust.
Formoterol is a long-acting beta-2 agonist (LABA) that relaxes airway muscle within minutes and keeps it relaxed for about 12 hours. It is used with an inhaled steroid for asthma, where budesonide-formoterol can serve as both controller and reliever, and for COPD. It is sold as Foradil and Oxis, and in combinations such as Symbicort and Dulera.
Formoterol is cleared mainly by glucuronidation and by CYP2D6 and CYP2C enzymes. The gene studies listed, from studies of budesonide-formoterol in asthma, looked at IL10 and IL17A for response. The most studied gene for beta-2 agonists, ADRB2, is covered on the class page. There is no CPIC or DPWG guideline.
Every published finding on gene variants and Formoterol. Upload your DNA file to see which of these rows apply to you.
Studies of how well it worked in people carrying a variant.
Study findings and evidence levels: PharmGKB (CC BY-SA 4.0). Guidelines: CPIC and DPWG, as bundled in PharmCAT. Most studies were done mainly in people of European ancestry.
More drugs from the same category
Beta-2 Agonists (class) (Beta-2 Agonists)
Not a prescribing recommendation. This page is educational information about pharmacogenomic research and clinical guidelines - it is not medical or dosing advice, and not a prediction of how any medication will work for you. Never start, stop, or change a medication or dose based on it; talk to your doctor or pharmacist, who can order clinical-grade testing if appropriate.
Content updated September 2026.
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