On a bit of a side note...if you're choosing to take supplements/vitamins, you should make sure that you're choosing ones that are sourced from whole foods.

Vitamin C that's sourced from whole fruits is going to be much more bioavailable than Vitamin C (ascorbic acid) that's made in a lab. It's important to know what you're putting in your body - wouldn't you rather consume real fruits than a man-made extract?

If you're shopping around for nutritional supplements/vitamins, I would recommend the Naturally Nova Scotia brand (google them!). They make all of their natural health products from whole foods and they're also certified organic.