Overview Open Label Crossover Study Pharmacokinetics (PK) Study in Healthy Volunteers Receiving Various Forms of Fentanyl Status: Completed Trial end date: 2015-04-01 Target enrollment: Participant gender: Summary A partially randomized, open-label, 3-way crossover, single-center, systemic and CSF PK and bioavailability study in healthy volunteers. Phase: Phase 4 Details Lead Sponsor: DepomedTreatments: Fentanyl