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a metabolically activated form of cholecalciferol (vitamin D3) synthesized in the liver.
First step in the biologic conversion of vitamin D3 to the more active form, calcitriol; it is more potent than vitamin D3.
25-hydroxycholecalciferol/25-hy·droxy·cho·le·cal·cif·e·rol/ (-ko″lĕ-kal-sif´er-ol) an intermediate in the hepatic activation of cholecalciferol; as the pharmaceutical preparation calcifediol, it is used in the treatment of hypocalcemia, hypophosphatemia, rickets, and osteodystrophy associated with various medical conditions.
a metabolically activated form of cholecalciferol synthesized in the liver.