Fenoterol is a short-acting beta 2 agonist which opens the airways to the lungs by decreasing bronchoconstriction. The stimulation of beta 2 receptors in the lungs causes the bronchial smooth muscle to relax, bronchodilation to occur and an increase in bronchial airflow.

Beta(2)-receptor stimulation in the lung causes relaxation of bronchial smooth muscle, bronchodilation, and increased bronchial airflow.

Fenoterol can be used to treat exacerbation of COPD as well as severe exacerbation of asthma symptoms.