Zinc, a nutrient found throughout your body, helps your immune system and metabolism function. Zinc is also important to wound healing and your sense of taste and smell. Zinc keeps the immune system strong, helps heal wounds, and supports normal growth. ZMA is a natural mineral supplement made up of zinc, magnesium aspartate, and vitamin B6. Zinc supports your immune system and muscles. Magnesium plays a role in metabolism and muscle health and helps manage sleep. B6 may boost energy.