Vitamin C
Vitamin C is a water soluble vitamin. Dogs do make their own vitamin C, but under certain conditions such as stress or disease, this production is likely to be reduced and supplementation maybe useful. Vitamin C also combats the damaging effect of the free radical and is necessary to support a healthy immune system. Vitamin C promotes healing and bone and cartilage formation depend on collagen as a building material, which is only synthesised in the presence of vitamin C.