Study of NGX267 Oral Capsules in Patients With Xerostomia Associated With Sjorgren's Syndrome

The purpose of this study is to evaluate the effectiveness of NGX267 in the improvement of decreased salivary flow associated with primary or secondary Sjögren's syndrome. For each patient, the study includes four periods of treatment separated by a washout period that may range from 4 - 8 days according to patient and site discretion. Each treatment period includes two overnight stays in the clinic. One dose of study drug is taken during each treatment period