Vitamin C (L-ascorbic acid)

Slices of citrus fruit on a grey background

Vitamin C (L-ascorbic acid)

Vitamin C is an essential dietary nutrient that is found at high levels in fresh fruits and vegetables, especially citrus fruits. It is required as a co-factor for many enzymes. Because it is a water-soluble vitamin that is not well stored, adequate amounts must be maintained through food or supplements.1,2

Properties and mechanism of action

In addition to promoting collagen biosynthesis, vitamin C is an important antioxidant that protects cells from the damaging effects of free radicals.2* By supporting epithelial barrier function against pathogens, vitamin C may also protect against environmental oxidative stress.3*

Vitamin C is maintained at high levels in most immune cells.3* Supplementation with vitamin C is helpful in promoting respiratory health.3*

Scientific support

Scientific studies have shown the efficacy of vitamin C in supporting the immune system and promoting overall health—especially respiratory function.3*

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.