Adults with Cystic Fibrosis (CF) & Exercise Intolerance
Trial Objectives
This exercise study is investigating how an already FDA approved drug for treatment of pulmonary vascular disease, sildenafil (Revatio ®), impacts exercise tolerance and capacity in people with cystic fibrosis (CF). Understanding and developing exercise tolerance is important for people with CF. Participants will be randomized to either the study drug group or the placebo group and complete exercise testing.