Overview Efficacy and Safety Study on Menatetrenone in the Treatment of Postmenopausal Osteoporosis Women Status: Completed Trial end date: 2007-07-01 Target enrollment: Participant gender: Summary To determine the effect and safety of menatetrenone on treatment of postmenopausal osteoporosis comparing with alfacalcidol. Phase: Phase 3 Details Lead Sponsor: Eisai Co., Ltd.Treatments: AlfacalcidolHydroxycholecalciferolsMenatetrenone