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  2. 經美國FDA證實優於化學合成營養素,吸收率比化學合成維生素多4倍,輕鬆滿足營養需求. 建議選有原廠授權的全食物型態營養素來源的綜合維他命,品質更優質,食用安全性與功效上更有保障

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  1. en.wikipedia.org › wiki › Vitamin_DVitamin D - Wikipedia

    The major natural source of vitamin D is synthesis of cholecalciferol in the lower layers of the epidermis of the skin, through a photochemical reaction with Ultraviolet B (UV-B) radiation from sun exposure or UV-B lamps. [1] Cholecalciferol and ergocalciferol can be ingested from the diet and supplements.

  2. Cholecalciferol (vitamin D3) appears to stimulate the body's interferon type I signaling system that protects against bacteria and viruses, unlike vitamin D 2. For psoriasis, cream that includes vitamin D3 can have a good effect, or UVB phototherapy. Vitamin D

  3. Vitamin D receptor. The vitamin D receptor ( VDR also known as the calcitriol receptor) is a member of the nuclear receptor family of transcription factors. [5] Calcitriol (the active form of vitamin D, 1,25- (OH) 2 vitamin D 3) binds to VDR, which then forms a heterodimer with the retinoid-X receptor.

  4. Vitamin D deficiency or hypovitaminosis D is a vitamin D level that is below normal. It most commonly occurs in people when they have inadequate exposure to sunlight, particularly sunlight with adequate ultraviolet B rays (UVB).[1] [2] [3] Vitamin D deficiency can also be caused by inadequate nutritional intake of vitamin D; disorders that limit vitamin D absorption; and disorders that impair ...

  5. en.wikipedia.org › wiki › CalcifediolCalcifediol - Wikipedia

    Calcifediol, also known as calcidiol, 25-hydroxycholecalciferol, or 25-hydroxyvitamin D3 (abbreviated 25 (OH)D3 ), [1] is a form of vitamin D produced in the liver by hydroxylation of vitamin D 3 (cholecalciferol) by the enzyme vitamin D 25-hydroxylase.

  6. Previtamin D3 is an intermediate in the production of cholecalciferol ( vitamin D 3 ). It is formed by the action of UV light, most specifically UVB light of wavelengths between 295 and 300 nm, acting on 7-dehydrocholesterol in the epidermal layers of the skin. [1] [2] [3]

  7. en.wikipedia.org › wiki › Vitamin_K2Vitamin K2 - Wikipedia

    Vitamin K2 or menaquinone ( MK) ( / ˌmɛnəˈkwɪnoʊn /) is one of three types of vitamin K, the other two being vitamin K 1 ( phylloquinone) and K 3 ( menadione ). K 2 is both a tissue and bacterial product (derived from vitamin K 1 in both cases) and is usually found in animal products or fermented foods. [1]

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