Vitamin C: stomach damage from high doses?

[Guest guest]

Greetings:

I've been taking vitamin C and have noticed some positive changes; I

went to Busch Gardens (walking and standing marjoirity of day) for eleven

hours last weekend and STILL had energy when I got home!

I was telling a colleague about it though and he said " Whoa - be

careful, too much vitamin C can be bad for the stomach.. the acid could burn a

hole in your stomach "

Is this true? Has anyone asked an MD about negative effects of

super high doses of C??

Please advise.

Peace, Marti