Long-term high-dose intake of vitamin C may lead to the increase of urine acidity, which is not conducive to the excretion of some substances in urine, and then induce stones.

Vitamin C is a water-soluble vitamin. In vivo, it is not only an efficient antioxidant to reduce oxidative stress in vivo, but also an essential substance to maintain normal metabolism and physiological function of human body.

Because the human body can't synthesize vitamin C by itself, it must be ingested through food and drugs. The daily demand for vitamin C is very small, and 60~70 mg is enough for healthy men.

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