Title: PHARMACOKINETIC INTERACTION BETWEEN TADALAFIL AND BOSENTAN IN HEALTHY MALE SUBJECTS
Abstract: PURPOSE: Tadalafil is an oral phosphodiesterase type 5 (PDE5) inhibitor approved for the treatment of erectile dysfunction and under investigation for the once-daily treatment of pulmonary arterial hypertension (PAH). Since bosentan is an oral, dual endothelin receptor antagonist indicated in the treatment of patients with PAH, this study determined whether pharmacokinetic interactions exist between tadalafil and bosentan.