Overview A Long-Term Study To Evaluate Safety And Efficacy Of Pregabalin For Postherpetic Neuralgia Status: Completed Trial end date: 2008-08-19 Target enrollment: Participant gender: Summary To evaluate the safety of the long-term use of pregabalin. Phase: Phase 3 Details Lead Sponsor: PfizerPfizer's Upjohn has merged with Mylan to form Viatris Inc.Treatments: Pregabalin