Since there are many forms of vitamin C. What is the best choice for vitamin C supplement?

Dear esgibby:

You may find the following link from our website to be very informative:
Vitamin Families A, C, and E

Best Wishes,
-Skin Bio Team

hi esgibby,
I take the calcium ascorbate form of Vitamin C. It is the one that causes the least amount of digestive upset. It's a bit more expensive than the ascorbic acid form.

http://www.myhealthmybody.com/product/index/biocgel