Persistent arguments on this question may be settled by vitamin c antiviral at how much vitamin C animals manufacture in their bodies. The answer is: quite a lot.
Did not find what they wanted? Try here
Most animals make the human body-weight equivalent of 5,000 to 10,000 milligrams a day. It is unlikely that animals would have evolved to make this much vitamin C if they did not need it and use it. Indeed, cells in many human body tissues concentrate vitamin C by 25-fold or more over bloodconcentration. Each person’s need for vitamin C differs because of differences in genetics and individual biochemistry . Further, our bodies undergo different stresses, and we certainly eat different foods.