Can you take too much Vitamin C?

No – you cannot take too much vitamin C. Firstly, the body has specialised vitamin C transporters in the small intestine that can take up only a certain amount of vitamin C at any one time (the rest is excreted in faeces). Secondly, because vitamin C is water-soluble, it is not stored in the body like the fat soluble vitamins A and D. Therefore, the body takes what it needs from the blood and the rest is excreted in urine. Unless a person has kidney failure, the evidence for the role of vitamin C in kidney stone formation is very equivocal and often does not take confounding factors into consideration [1,2].

References:

1.          Pullar JM, Carr AC, Vissers MC. Vitamin C supplementation and kidney stone risk. N Z Med J. 2013;126(1384):133-4.

2.          Prier M, Carr AC, Baillie N. No reported renal stones with intravenous vitamin C administration: A prospective case series study. Antioxidants. 2018;7(68):1-10.