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A vitamin is an organic molecule (or a set of molecules to the side of linked chemically, i.e. vitamers) that is an necessary micronutrient which an organism needs in small quantities for the proper functional of its metabolism. valuable nutrients cannot be synthesized in the organism, either at every or not in ample quantities, and suitably 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 enhance the three additional groups of vital nutrients: minerals, essential fatty acids, and vital amino acids. Most vitamins are not single molecules, but groups of combined 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 skillfully as all-trans-beta-carotene and extra 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 cutting 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 bump and differentiation. Vitamin D provides a hormone-like function, regulating mineral metabolism for bones and new organs. The B puzzling vitamins law as enzyme cofactors (coenzymes) or the precursors for them. Vitamins C and E feint 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 reach so.

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

This was followed in the 1950s by the lump production and marketing 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 biting 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 by yourself a rarefied of micronutrients critical to life, every of which he presumed to be amines. later than this presumption was forward-thinking distinct not to be true, the "e" was dropped from the name. all vitamins were discovered (identified) amongst 1913 and 1948.

Vitamin D3 2000 I.U. (Lemon) by Solaray - 60 Lozenges