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.

Ingredient details are provided as general information and are not intended to be associated with any specific Zarbee’s® products.

REFERENCES: 1. Vitamin C Fact Sheet for Health Professionals. National Institutes of Health. Updated February 27, 2020. Accessed July 7, 2021. https://ods.od.nih.gov/factsheets/VitaminC-HealthProfessional/ 2. Jacob RA, Sotoudeh G. Vitamin C function and status in chronic disease. Nutr Clin Care. 2002;5(2):66-74. 3. Carr AC, Maggini S. Vitamin C and immune function. Nutrients. 2017;9(11):1211.