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Vitamin is a nutrient that is an organic compound required in tiny amounts for
essential metabolic reactions in a living organism..Vitamins have diverse biochemical functions, including function as hormones, antioxidants, and mediators of cell signaling
and regulators of cell and tissue growth and differentiation .
Vitamins are obtained solely through food intake and so most vitamins could
not be
obtained in sufficient quantities by the body, and should be obtained from the
diet. Until the beginning of the xx century when
Vitamins have been produced as
commodity chemicals and made widely available for several
years, allowing supplementation of the dietary intake.
The largest number of vitamins function as
precursors for enzyme cofactor bio-molecules , that help act as
catalysts and substrates in metabolism. Vitamins also act as
coenzymes to carry chemical groups between enzymes. Vitamins are
defined by their biological activity, not their structure. Thus, each
"vitamin" actually refers to a number of vitamer compounds, which form a
set of distinct chemical compounds that show the biological activity of
a particular vitamin.
Calcium Ascorbate ,
Ester-C , K-Mag ,Multivitamins, Vitamin A , Vitamin B,Vitamin C , Vitamin D,
Vitamin E, Vitamin K1, Vitamin O.
Vitamin G Riboflavin Reclassified as Vitamin B2
Vitamin H Biotin Reclassified as Vitamin B7
Vitamin J Catechol, Flavin Protein metabolite
Vitamin L1[32] Anthranilic acid Protein metabolite
Vitamin M Folic acid Reclassified as Vitamin B9
Vitamin O Carnitine Protein metabolite
Vitamin B4 Adenine DNA metabolite
Vitamin B8 Adenylic acid DNA metabolite
Vitamin F Essential fatty acids Needed in large quantities (does
not fit the definition of a vitamin).
Vitamin L2[32] Adenylthiomethylpentose RNA metabolite
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