can too much vitamin C cause diarrhea?

[aalfarhan]

I take a serving size (2 pills) of GNC Mega Men which has 300mg of vitamin C. I just took a 1000mg of pure vitamin C, and went to the crapper. I took a total of 1300mg of vitamin C for the day. is this too much? I don't do this often, just when I start to feel I have a cold, a vitamin C pill usually does the trick.

[PieEyedPiper]

I take a serving size (2 pills) of GNC Mega Men which has 300mg of vitamin C. I just took a 1000mg of pure vitamin C, and went to the crapper. I took a total of 1300mg of vitamin C for the day. is this too much? I don't do this often, just when I start to feel I have a cold, a vitamin C pill usually does the trick.

Absolutely. Vitamin C tends to cause stomach distress/diarrhea in doses beyond the 4g range. Some people can take 6g no prob, some can't take 2g in a day without hitting the can with some serious angst.
Try taking it with food. Vitamin C meets the diminishing returns @ ~2-4g. However, it does seem likely that your moderate dose may or may not be related. Try the food thing.

And before anyone criticizes or asks for a source, this came from my text book and my nutrition professor.

[newbreedfreak]

Yes. A great supplement but like with all other good things, too much isn't good

[cuse88]

I take between 1-2g of Vitamin C per day and every once in awhile I'll get some issues,but nothing major. I'd give it a week or so and if continues maybe split up your dose through out the day and see if that helps.

[Starkk]

If by 600mg of Vitamin C, you mean 3 McRibs, then yes.