home care health: Vitamin D3 - Vitamin D3 1,000 IU Sublingual tablets, 150 tabs Vitana Vitamins

A vitamin is an organic molecule (or a set of molecules next door to linked chemically, i.e. vitamers) that is an critical micronutrient which an organism needs in small quantities for the proper functioning of its metabolism. necessary nutrients cannot be synthesized in the organism, either at every or not in ample quantities, and hence 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 add together the three new groups of vital nutrients: minerals, essential fatty acids, and essential amino acids. Most vitamins are not single molecules, but groups of united 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 other 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 caustic 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 growth and differentiation. Vitamin D provides a hormone-like function, bendable mineral metabolism for bones and extra organs. The B profound vitamins perform as enzyme cofactors (coenzymes) or the precursors for them. Vitamins C and E measure 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 unaided source of vitamins was from food. If intake of vitamins was lacking, the result was vitamin deficiency and consequent dearth diseases. Then, commercially produced tablets of yeast-extract vitamin B rarefied and semi-synthetic vitamin C became available.

This was followed in the 1950s by the growth production and marketing of vitamin supplements, including multivitamins, to prevent vitamin deficiencies in the general population. Governments mandated addition of vitamins to staple foods such as flour or milk, referred to as food fortification, to prevent deficiencies. Recommendations for folic pointed 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 isolated a technical of micronutrients essential to life, all of which he presumed to be amines. bearing in mind this presumption was vanguard clear not to be true, the "e" was dropped from the name. all vitamins were discovered (identified) amongst 1913 and 1948.

Natrol: Natrol Vitamin D3 Maximum Strength, Bone & Joint Health, 10,000 IU, Tablets, 60ct