You can have too much C

Fitness Q & A

Health & Fitness

October 12, 2003|By Gailor Large | Gailor Large,Special to the Sun

Are high doses of vitamin C dangerous? I've heard that water-soluble vitamins are harmless, but I recently read that too much "C" can cause kidney stones. Is this true?

According to Dr. Thomas Erlinger, of Johns Hopkins, "There have been reports of kidney damage with high doses of vitamin C, including kidney stones."

But before you go on a citrus-free diet, take heart. Erlinger says these problems are most common in patients with underlying kidney disease and in those receiving vitamin C intravenously. Chances are you have no need to worry.

Just make sure to keep your daily intake between 75 milligrams (the government's recommended daily allowance) and 2,000 milligrams. With more than 2,000 milligrams per day, you may be putting yourself at risk.

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