I know we answered this in detail before, but I can't find the post.
I had a question,
I've heard that taking large doses of Vitamin C cause kidney stones,
is this true?
what were they talking about?
thank you very much.
In a word, NO.
This myth is perpetuated in medical texts without any study that has ever demonstrated such an effect. This is a theoretical concern based on vitamin Cs ability to increase the body's production of oxalates.
Dr. Robert Cathcart http://www.othomed.com is the physician who has the most clinical experience with high dose replacement ascorbate and he reports no cases of kidney stones in over 20,000 patients.
Linus the Great in the book HOW TO LIVE LONGER AND FEEL BETTER (Pauling, 1986) points out the the pH of the urine can determine which type of stones form. They don't form in neutral urine. The most common stones form in alkaline urine, and ascorbic acid should be taken to help turn the urine more acidic and prevent these stones.
If your urine is acidic, you might want to take the sodium ascorbate form of vitamin C to raise the pH and prevent kidney stones.
A recent large study found no relationship between vitamin C and kidney stone formation, but did find that low levels of vitamin B6 is correlated with the formation of kidney stones.
Finally, animals make between 3000 and 13,000 mg of ascobic acid daily adjusted for body weight. If medicine is right, then most animals are in a lot of pain a great deal of the time as they expell all these stones