One of the D vitamins, a sterol that is formed when its isomer ergosterol is exposed to ultraviolet light, and that is routinely added to dairy products. Also called ergocalciferol, vitamin D2 (see vitamin D).
- Although several chemical compounds provide vitamin D activity, only two of these substances are commonly found in the diet of animals: vitamin D 2, or calciferol, and vitamin D 3.
- The physiotherapist delivered vitamin D tablets (two 1.25 mg calciferol tablets initially and then one monthly for one year) to those not already taking this supplement.
- Vitamin D, also called calciferol, is a vitamin that dissolves in the body's fat.
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