Carr AC, Maggini S. Vitamin C and immune function. Nutrients. 2017;9(11):1211. doi:10.3390/nu911211. ��
Schwartz J, Weiss ST. Relationship between dietary vitamin C intake and pulmonary function in the first National Health and Nutrition Examination Survey (NHANES I). Am J Clin Nutr. 1994;59(1):110-114.
doi: 10.1093/ajcn/59.1.110.
Mancebo SE, Wang SQ. Recognizing the impact of ambient air pollution on skin health.
J Eur Acad Dermatol Venereol. 2015;29(12):2326-32.
doi: 10.1111/jdv.13250
Carr AC, Vissers MC. Synthetic or food-derived vitamin C--are they equally
bioavailable? Nutrients. 2013;5(11):4284-304.
doi: 10.3390/nu5114284.
Prochazkova D, Bousiva I, Wihelmova N. Antioxidant and prooxidant properties of
flavonoids. Fitotherapiea. 2011;82(4):513-523.
doi:10.1016/j.fitote.2011.01.018.
Oregon State University. The Bioavailability of Different forms of Vitamin C (Ascorbic
Acid). Linus Pauling Institute Micronutrient Information Center. Accessed April 14, 2021.