vitamin D

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Related to vitamin D2: vitamin D3, ergocalciferol

vitamin D

[′vīd·ə·mən ¦dē]
(biochemistry)
Either of two fat-soluble, sterol-like compounds, calciferol or ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3); occurs in fish liver oils and is essential for normal calcium and phosphorus deposition in bones and teeth. Also known as antirachitic vitamin.
References in periodicals archive ?
But researchers found just eating mushrooms, which contain vitamin D2, is as effective in raising and maintaining vitamin D levels as taking vitamin D2 or vitamin D3 supplements.
No significant differences were observed between vitamin D2, vitamin D3, and ultraviolet light exposure.
For example, a female with Fitzpatrick skin type II (Caucasian; Fitzpatrick 1988) with a whole-body exposure to one minimum erythemal dose (MED), or the amount of UV needed to barely turn skin pink after 24 hr, in a tanning bed with a weighted spectral distribution similar to the midday summer sun at approximately 35 [degrees] N produces the equivalent of an oral dose of approximately 15,500 IU vitamin D2 or [D.
Both vitamin D2 and Vitamin D3 were investigated and the results found that 700-1000 IU supplemental vitamin D per day (vitamin D2 or vitamin D3) reduced falls by 19% for vitamin D2 and up to 26% with vitamin D3.
Vitamin D2 (ergocalciferol), used in food supplements and food fortification, is derived from a non-animal source.
Our company is moving quickly to produce a mushroom-based product with naturally enhanced levels of vitamin D2 for human dietary nutritional use.
Until prospective trial results are available, many experts would recommend correcting vitamin D deficiency with 50,000 IU capsule of vitamin D2 weekly for 8 weeks, followed by either 50,000 IU of vitamin D2 every 2 to 4 weeks or by 1000 IU to 2000 IU of vitamin D3 daily.
Vitamin D2 is as effective as vitamin D3 in maintaining circulating concentrations of 25-hydroxyvitamin D.
Vitamin D3, or cholecalciferol, is more readily absorbed by the body and more potent than vitamin D2, or ergocalciferol, the form often found in multivitamins.
Vitamin D obtained from sun is in the form of vitamin D3 (cholecalciferol), while vitamin D2 (ergocalciferol) or D3 may be obtained from dietary sources.
Fly sprays, antibiotics, men taking saunas, two glasses of milk, vitamin D2, a sliced white loaf, bacon, saturated fat, processed meat and mouthwash have all been rated good and bad when it comes to cancer.
Vitamin D3 (cholecalciferol) is the preferred form since it is more readily absorbed than vitamin D2.
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