Which vitamin D supplements are used for the prevention of osteoporosis?

Updated: Sep 26, 2019
  • Author: Monique Bethel, MD; Chief Editor: Herbert S Diamond, MD  more...
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Answer

Vitamin D is available as ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3). Vitamin D is metabolized to active metabolites. These metabolites promote the active absorption of calcium and phosphorus by the small intestine, elevating serum calcium and phosphate levels sufficiently to permit bone mineralization. Ergocalciferol, the form mostly used in supplements and fortified foods, is absorbed with similar efficiency to cholecalciferol, the main dietary form, with similar effects on suppression of PTH.


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