What is the effect of vitamin C taken daily for a regular person (assuming the person does not have vitamin C deficiency)?
There is no overdose, even for drinks exceeding 10 grams per day. Indeed, ascorbic acid is eliminated in the urine when its plasma concentration reaches or exceeds 12 mg / L.
Since
the body eliminates urinary surplus vitamin C, there are therefore very
few adverse effects because this vitamin is not stored by the body.
Massive
doses (10 times the RDA of vitamin C and up to 150 times) can sometimes
lead to diarrhea, increased mobilization of bone minerals, increased
clotting, elevation of Uric acid concentration, gout attack, kidney stone formation.