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calciferol |
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calciferol: see vitamin vitamin, group of organic substances that are required in the diet of humans and animals for normal growth, maintenance of life, and normal reproduction. Vitamins act as catalysts; very often either the vitamins themselves are coenzymes , or they form integral parts ..... Click the link for more information. . calciferol a fat-soluble steroid, found esp in fish-liver oils, produced by the action of ultraviolet radiation on ergosterol. It increases the absorption of calcium from the intestine and is used in the treatment of rickets. Formula: C28H43OH calciferol [kal′sif·ə‚rōl] (biochemistry) A synthetic form of vitamin D that is prepared by ultraviolet irradiation of ergosterol, a vitamin D precursor found in plants. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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400 IU (10 [micro]g) per day of ergocalciferol (vitamin D2) or of cholecalciferol (vitamin D3) are sufficient. Ergocalciferol (vitamin D2) at high doses (150,000 to 200,000 IU/kg/day) administered prior to mating resulted in altered estrous cycle and inhibition of pregnancy in rats. |
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