Vitamin C (ascorbic acid) has numerous biologicalfunctions. Foremost, it is essential for the synthesis ofcollagen and glycosaminoglycans which are thebuilding materials of all connective tissues, such asskin, blood vessels, tendons, joint cartilage and bone.Vitamin C is the required coenzyme for two groups ofenzymes that catalyze the crosslinking of collagenfibers - lysyl hydroxylases and prolyl hydroxylases.As such, vitamin C is essential for normal woundhealing and capillary health.
Vitamin C participates in the biosynthesis of carnitine,serotonin, and certain neurotransmitters, includingnorepinephrine.
Vitamin C is among the most powerful antioxidants inhumans and animals. It is a water-soluble, chainbreakingantioxidant that reacts directly withsuperoxide, hydroxyl radicals, and singlet oxygen.Laboratory studies show that vitamin C completelyprotects lipids in plasma and low-density lipoproteins(LDL) against atherogenic peroxidative damage. Inaddition, vitamin C interacts with glutathione and alphalipoicacid, and regenerates vitamin E. The antioxidantfunctions of vitamin C appear to have clinicalsignificance in providing protection from free radicaldamage to the eyes, lungs, blood and the immunesystem.
Research has also demonstrated ascorbic acid's abilityto positively affect function of the immune system byoptimizing synthesis of integral components of ourimmunological defenses.
Vitamin C is absorbed in the small intestine by asodium-dependent transport process that is intakedependent. At normal dietary intakes of 60 to 100 mg,up to 80 or 90% of the vitamin C is absorbed. Athigher intakes, absorption becomes less efficient.Absorption efficiency and vitamin C utilization may begreatly enhanced during conditions of physiologicalstress, such as trauma or infection.
Adults take 1 Tablet daily with meals or as directed by physician.