Overview Phase I Study to Investigate the Effect on the Blood Pressure After Oral Administration of SK3530 and Amlodipine Status: Completed Trial end date: 2011-07-01 Target enrollment: Participant gender: Summary To assess the pharmacodynamic effects of co-administrated SK3530 (PDE5 inhibitor) and Amlodipine, phase I study in Hypertensive patient was designed. Phase: Phase 1 Details Lead Sponsor: SK Chemicals Co., Ltd.SK Chemicals Co.,Ltd.Treatments: Amlodipine