Efficacy and safety of Menatetrenone-4 postmenopausal Thai women.

Clinical and comparative study of the efficacy and adverse events of Menatetrenone-4. The control group (n=40) received elemental calcium carbonate 800 mg/day and the Menatetrenone-4 treated group received elemental calcium carbonate 800 mg/day plus vitamin K2 45 mg/day (n=43). The vitamin K2 treated group showed a marked decrease of undercarboxylated osteocalcin at 2 weeks, six months (51.