• Vitamins

    The naturally occurring form is vitamin D3 (cholecalciferol)

    Naturally occurring form vitamin D3 The naturally occurring form is vitamin D3 (cholecalciferol) which is formed in the skin by the action of ultraviolet (VV) irradiation on 7-de hydrocholesterol. However, ergocaleiferol (vitamin D 2), which is derived from UV irradiation of ergosterol in plants, is a food additive, is consumed from the food and can be used by the body as an altemative to vitamin D3. When there is adequate exposure of the skin to sunlight, oral intake of ergosterol is unnecessary, indeed it may lead to toxic manifestations. It comes into its own when sunlight is scarce or the skin is heavily shrouded, as for example in certain ethnic…