Vitamin C against colds

Vitamin C against colds

C vitamin

Vitamin C , or more correctly  Ascorbic Acid , is a water-soluble molecule which performs numerous essential functions: among these it seems that the ability to prevent and reduce the  symptoms  of the  common cold has been recognized ; however, the subject is still controversial.

Vitamin   C is an enzymatic cofactor of hydroxylation and enables the formation of collagen, adrenaline and  aromatic compounds in  the liver .Vitamin C is a powerful  antioxidant  that intervenes in the cellular defense against  free radicals , promotes the reduction of folic acid  as well as the  conversion of ferrous iron (Fe²⁺) to ferric iron (Fe³⁺) . But it’s not over…

Cold Prevention

For about 50 years, the scientific community has split in two in evaluating the clinical utility of vitamin C in the treatment and prevention of the common cold. Briefly summarizing the most significant discoveries, it is possible to define that:

  • vitamin C is an essential molecule for  leukocyte  homeostasis , therefore, its deficiency would significantly affect the  immune defenses , which would be less stimulated and less active.
  •  some trials have shown that pharmacological administration of vitamin C can FIGHT  cold symptoms  (L. Pauling 1970) and also PREVENT its onset (H. Hemilia 1994-1995-1997).
  • through the  administration  of 1-4g/day (about 200-800% of the recommended ration), it should be possible to reduce the symptoms of the common cold by 23%, and prevent its onset in 30% of cases (above all in subjects characterized by severe oxidative stress ).

Furthermore, it is important to specify that (citation of LARN):

” At high doses of vitamin C, such as those taken for pharmacological purposes (10 or more g/day), gastrointestinal disturbances have been found, which however seem to be due more to the acidity than to the vitamin C itself, as buffered salts  no longer give the same effect. Other effects have also been found, such as increased urinary excretion of  oxalates  and the formation of  kidney stones . However, it appears that doses up to 10g/day may be considered safe (Flodin, 1988). ”

However, the use of vitamin C against colds is still the subject of numerous discussions, therefore, until a compromise is reached between therapy and the maximum recommended dose, its integrative or pharmacological abuse in the fight against symptoms and in prevention is strongly NOT RECOMMENDED of the common cold



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