Overview Evaluation of Pain Reduction After Hemorrhoidectomy With Use of Diltiazim Ointment 2% Status: Completed Trial end date: 2008-12-01 Target enrollment: Participant gender: Summary The purpose of this study is to evaluate the effectiveness of diltiazem ointment 2 percent in reducing pain after hemorrhoidectomy. Phase: Phase 4 Details Lead Sponsor: Tehran University of Medical SciencesTreatments: Diltiazem