Principal vitamins and its function

Vitamins            Function Deficiency
A(retinol) Rhodopsin synthesis, normal health of epithelial cells, and bone and tooth growth. Rhodopsin deficiency, night blindness, retarded growth, skin disorders, and increased infection risks.
B1(thiamine) Involved in carbohydrate and amino acid metabolism, necessary for appetite and good health, aids in normal functioning of nervous system. Beriberi- muscle weakness, neuritis and paralysis.
B2(riboflavin) Component of flavin adenine dinucleotide (FAD), involved in citric acid cycle, prevent and used to treat migraine, headaches, cataracts, dermatitis, etc. Eye disorders and skin cracking, especially at corners of the mouth.
B5 (pantothenic acid) Constituent of coenzyme A, glucose production from lipids and amino acids, and steroid hormone. Neuromuscular dysfunction and fatigue.
B3(niacin) Component of nicotinamide adenine dinucleotide (NAD), involved in glycolysis and citric acid cycle. Pellagra- diarrhea, dermatitis, and mental disturbance.
B6(pyridoxine) Involved in amino acid metabolism Dermatitis, retarded growth, and nausea
B9 ( Folic acid) Nucleic acid synthesis, hematopoiesis Macrocytic anemia(enlarged red blood cells)
B12 (cyanacobalamin) Necessary for erythrocyte production, some nucleic acid and amino acid metabolism. Pernicious anemia and nervous system disorders
C (ascorbic acid) Collagen synthesis, general protein metabolism. Scurvy-defective bone formation and poor wound healing.
D (cholecalciferol, ergosterol) Promotes calcium and phosphorous use, normal growth and bone and teeth formation. Rickets- poorly developed, weak bones osteomalacia, bone reabsorption.
E (alpha tocopherol) Prevents catabolism of certain fatty acids, may prevent miscarriage Muscular dystrophy and sterility.
H (biotin) Fatty acid and purine synthesis, movement of pyruvic acid into citric acid cycle. Mental and muscle dysfunction, fatigue and nausea.
K (phylloquinone) Required for synthesis of a number of clotting factors Excessive bleeding due to retarded blood clotting.

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Principal vitamins and its function