Overview Pregabalin for Treatment of Patients With Postherpetic Neuralgia (PHN) Status: Completed Trial end date: 2014-01-01 Target enrollment: Participant gender: Summary To prove pregabalin is effective in relieving pain compared with placebo in subjects with postherpetic neuralgia (PHN). Phase: Phase 4 Details Lead Sponsor: PfizerPfizer's Upjohn has merged with Mylan to form Viatris Inc.Treatments: Pregabalin