Dataset from A Randomized, Double-blind, Placebo-controlled Parallel Group Study to Investigate the Safety and Efficacy of Two Doses of Tiotropium Bromide (2.5 mcg and 5 mcg) Administered Once Daily Via the Respimat Device for 12 Weeks in Patients With Cystic Fibrosis.

This study evaluates the effects of 12-week treatment with two doses of tiotropium bromide (2.5 mcg q.d. and 5 mcg q.d.) compared to placebo administered via the Respimat device on lung function in patients with Cystic Fibrosis. The selection of the optimal dose will be based on bronchodilator efficacy, safety evaluations and pharmacokinetic evaluations