Overview Study to Evaluate the Interaction Potential of Clarithromycin XL on Diltiazem Hydrochloride Cream 2% in Healthy Subjects Status: Completed Trial end date: 2013-10-01 Target enrollment: Participant gender: Summary The purpose of this study is to evaluate the drug-drug interaction potential of clarithromycin XL on Diltiazem hydrochloride (DTZ) 2% cream. Phase: Phase 1 Details Lead Sponsor: Ventrus Biosciences, IncCollaborator: TKL Research, Inc.Treatments: ClarithromycinDiltiazem