Biotin is a water-soluble B vitamin that is involved in the metabolism of protein, fats, and carbohydrates. It may also help support healthy hair, skin and nails.* Vitamin C, one of the antioxidant essentials, may help protect the body's cells from potential damage and supports the immune system. It is important for the structure of bones, muscles, and blood vessels, as well as the health of teeth and gums.* Zinc is an essential mineral that may help support a healthy immune system. Its antioxidant properties may help protect cells from the damaging effects of free radicals.*