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Updated January 28, 2008


Cholecalciferol is the general chemical name for vitamin D3. The two terms are interchangeable. Cholecalciferol has three forms:

  1. Calcitol: Inactive form (made in the skin by UV light from the sun)
  2. Calcidiol: Partially active form (circulates in the blood; made in the liver from calcitol)
  3. Calcitriol: Active Vitamin D3 (made in the kidneys from calcidiol)
Cholecalciferol is the type of vitamin D that is added to “enriched” or “fortified” foods.

In Depth: Vitamin D and High Blood Pressure

Also Known As: Vitamin D, Vitamin D3
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