home care health: Vitamin D 4 - Vitamin D complex Forms of Vitamin D vitamin D1, Vitamin D2, Vitamin D3, Vitamin D4

A vitamin is an organic molecule (or a set of molecules to the side of related chemically, i.e. vitamers) that is an critical micronutrient which an organism needs in small quantities for the proper involved of its metabolism. vital nutrients cannot be synthesized in the organism, either at all or not in satisfactory quantities, and fittingly must be obtained through the diet. Vitamin C can be synthesized by some species but not by others; it is not a vitamin in the first instance but is in the second. The term vitamin does not supplement the three additional groups of indispensable nutrients: minerals, valuable fatty acids, and essential amino acids. Most vitamins are not single molecules, but groups of joined molecules called vitamers. For example, there are eight vitamers of vitamin E: four tocopherols and four tocotrienols. Some sources list fourteen vitamins, by including choline, but major health organizations list thirteen: vitamin A (as all-trans-retinol, all-trans-retinyl-esters, as capably as all-trans-beta-carotene and supplementary provitamin A carotenoids), vitamin B1 (thiamine), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6 (pyridoxine), vitamin B7 (biotin), vitamin B9 (folic pointed or folate), vitamin B12 (cobalamins), vitamin C (ascorbic acid), vitamin D (calciferols), vitamin E (tocopherols and tocotrienols), and vitamin K (phylloquinone and menaquinones).

Vitamins have diverse biochemical functions. Vitamin A acts as a regulator of cell and tissue layer and differentiation. Vitamin D provides a hormone-like function, variable mineral metabolism for bones and additional organs. The B perplexing vitamins achievement as enzyme cofactors (coenzymes) or the precursors for them. Vitamins C and E feign as antioxidants. Both deficient and excess intake of a vitamin can potentially cause clinically significant illness, although excess intake of water-soluble vitamins is less likely to do so.

Before 1935, the lonesome source of vitamins was from food. If intake of vitamins was lacking, the outcome was vitamin nonappearance and consequent nonattendance diseases. Then, commercially produced tablets of yeast-extract vitamin B mysterious and semi-synthetic vitamin C became available.

This was followed in the 1950s by the bump production and promotion of vitamin supplements, including multivitamins, to prevent vitamin deficiencies in the general population. Governments mandated adjunct of vitamins to staple foods such as flour or milk, referred to as food fortification, to prevent deficiencies. Recommendations for folic sharp supplementation during pregnancy edited risk of infant neural tube defects.

The term vitamin is derived from the word vitamine, which was coined in 1912 by Polish biochemist Casimir Funk, who forlorn a highbrow of micronutrients critical to life, every of which he presumed to be amines. subsequently this presumption was higher definite not to be true, the "e" was dropped from the name. every vitamins were discovered (identified) amid 1913 and 1948.

Vitamin D4 - VD-0004 - Lanospharma (China Trading Company) - Other Chemicals - Chemicals