Overview The Effect of Vitamin K Supplementation on Glucose Metabolism Status: Completed Trial end date: 2010-12-01 Target enrollment: Participant gender: Summary The purpose of this study is to test whether vitamin K supplementation has an effect on glucose metabolism in terms of acute beta cell response. Phase: Phase 4 Details Lead Sponsor: Seoul National University HospitalTreatments: MenatetrenoneVitamin KVitamin K 2Vitamins