Roflumilast, a selective phosphodiesterase 4 inhibitor, has been shown to provide modest improvements in lung function in patients with mild-to-moderate asthma, but its efficacy in patients with moderate-to-severe asthma has not been assessed. Authors hypothesized that this drug might provide benefit if combined with montelukast, a leukotriene receptor antagonist, in patients whose symptoms are uncontrolled by inhaled corticosteroids and long-acting β-agonists.
The combination of roflumilast with montelukast compared with montelukast alone improved lung function and asthma control in patients with moderate-to-severe asthma and deserves further study for this indication.
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