60,000 Units of Cholecalciferol Fails to Normalize Serum 25 Hydroxyvitamin D (25OHD) in Volunteers in North India Aims: To study the effect of a single large dose of cholecalciferol on 25OHD over 3 months. (Hypovitaminosis D is common in India. Data are scant on doses of cholecalciferol required to...