Zinc has been used since ancient Egyptian times to enhance wound healing and is necessary for the functioning of more than 300 different enzymes that play a vital role in an enormous number of biological processes. It helps in the development and maintenance of bones, cartilage, teeth and gums; connective tissue formation; wound healing. Helps to maintain immune function. Zinc is a co-factor for the antioxidant enzyme superoxide dismutase (SOD) and is in a number of enzymatic reactions involved in carbohydrate and protein metabolism.