Can Too Much Vitamin C Cause Kidney Stones?

Author: Staff Writer

Too much vitamin C can increase the chances of getting kidney stones.

More info: Though there have been numerous studies on the effects of large doses of vitamin C as a cause of the development of kidney stones, this is not a concern for people with normal healthy diets. The studies conducted concluded that the concern was when mega-doses were ingested over a long period of time.

The National Institute of Health recommends taking vitamin C in amounts no greater than that found in a multivitamin.

What Are Kidney Stones?

Kidney stones are caused by an imbalance of the fluids and minerals found in urine. The rise of crystal-forming minerals and the low level of fluids in the kidney start the crystal formation process, which ends in a kidney stone. Even though kidney stones can contain different forms of crystals, the most common type of kidney stone is made of calcium oxalate or calcium phosphate.        

How Much Vitamin C Is Safe?

Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that must be obtained through the diet. Humans require this nutrient for the synthesis of collagen and norepinephrine. It is also a vital antioxidant. Vitamin C deficiency leads to the disease scurvy. This potentially fatal condition rarely occurs in developed countries. The recommended daily allowance of Vitamin C for healthy adult males is 90 mg and 75 mg for healthy adult females. Those who smoke should increase their daily dosages to 125 mg and 110 mg, respectively.


Works Cited

National Library of Medicine - National Institutes of Health.
Vitamin C (Ascorbic Acid)

National Center for Biotechnology Information
Kidney stones

MedlinePlus Medical Encyclopedia
Vitamin C

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"Can Too Much Vitamin C Cause Kidney Stones?." Sophisticated Edge. N.p., n.d. Web. . <>.  

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