While you didn't suggest where you source your Vitamin C, it may be helpful to point out that the "grams of C in the wild" that are generally eaten by primates are probably from natural sources. You may find this article interesting to read, as there are questions as to have safe and effective certain vitamins and supplements are: <a href="http://www.bbc.com/future/story/20161208-why-vitamin-supplem... vitamin pills don't work, and may be bad for you</a>.