Pharmacokinetic Study of Lansoprazole in Cystic Fibrosis

The disposition of a number of drugs has been reported to be altered in patients with Cystic Fibrosis (CF). Changes in pharmacokinetic parameters observed included increased volumes of distribution and increased clearance of renally eliminated drugs. The purpose of this this study is to characterize the pharmacokinetics of IV lansoprazole and its metabolites in normal healthy children and children with Cystic Fibrosis (CF) ages 2 to \< 10 years. It is suspected that children with CF will have a more rapid clearance as compared to healthy children.