Taking large amounts of vitamin C can lead to other problems as well.
http://www.telegraph.co.uk/health/healthnews/9849917/High-dose-vitamin-C-doub...
12:58PM GMT 05 Feb 2013
They made their finding after looking at the incidence of kidney stones over 11 years in 23,355 men.
Those who took vitamin C supplements - which typically contain 1,000 milligrammes per tablet - were at twice the risk of developing the stones compared to men who took no vitamins.
Those who took the high-dose pills most regularly were at the highest risk.
But taking vitamin C as part of a multi-vitamin - which tend to contain much lower doses of the vitamin - did not raise the risk, found the researchers from the Karolinska Institute in Sweden.
Kidney stones are small crystals of waste matter that form and can block a part of the organ or the urinary tract, causing intense pain. They affect 10 to 20 per cent of men and three to five per cent of women.