Yangshengtang natural vc can generally eat one tablet a day. The function of VC can strengthen physique, prevent gum bleeding, improve oral environment and prevent oral ulcer. . At the age of 20, if there is no special need, there is no need to eat VE. VE is an antioxidant, also known as tocopherol or pregnancy-induced phenol, and it is a fat-soluble vitamin. It is suggested that VC can be supplemented appropriately, but VE should be eaten according to the actual situation. I wish you good health and good skin.