Overview A Study to Assess the Effectiveness of an Investigational Drug in Elderly Subjects With Low Vitamin D Levels (0822A-009) Status: Completed Trial end date: 2006-07-01 Target enrollment: Participant gender: Summary This study will assess the effectiveness of an investigational drug in elderly subjects with low vitamin D levels. Phase: Phase 2 Details Lead Sponsor: Merck Sharp & Dohme Corp.Treatments: Vitamin D