Answer
Formoterol in budesonide + formoterol inhalers selectively activates the β2-adrenoceptor, producing rapid, long-acting relaxation of bronchial smooth muscle in patients with reversible airways obstruction.
Sources for this answer
- Symbicort Turbohaler 100/6, Inhalation powder.AstraZeneca UK Limited · emc · SmPC §5.1 Pharmacodynamic properties · Version 31Document updated
Sources checked