The Journal of asthma : official journal of the Association for the Care of Asthma
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Randomized Controlled Trial
The effect of the endothelin-1 receptor antagonist, bosentan, on patients with poorly controlled asthma: a 17-week, double-blind, placebo-controlled crossover pilot study.
To determine the effect of bosentan on subjects with poorly controlled asthma. ⋯ In this pilot study, 4 weeks of bosentan did not improve FEV1, β-agonist use, asthma symptom score, or asthma control test score in patients with poorly controlled asthma when compared with placebo.