Overview Multiple-Ascending-Dose Study to Evaluate the Safety of Propoxyphene Napsylate In Healthy Adult Subjects Status: Terminated Trial end date: 2010-11-01 Target enrollment: Participant gender: Summary The purpose of this study is to determine the daily maximum tolerated dose of propoxyphene napsylate in healthy subjects. Phase: Phase 4 Details Lead Sponsor: Xanodyne PharmaceuticalsTreatments: DextropropoxypheneLevopropoxyphene