Question: what are the roles and functions of different vitamins?
Answer: Vitamin A helps form and maintain healthy teeth, bones, soft tissue, mucous membranes, and skin.
Vitamin B6 is also called pyridoxine. ... 
Vitamin B12, like the other B vitamins, is important for metabolism. ... 
Vitamin C, also called ascorbic acid, is an antioxidant that promotes healthy teeth and gums.