Natural Factors Zinc Citrate tablets contains 15 mg of this important trace mineral. Zinc supports our body's natural defenses and is essential for healthy skin. It is needed for many hormones and supports a healthy reproductive system, hence it is widely used to maintain normal prostate function.* Zinc is necessary for our sense of smell, taste and vision. Zinc Citrate is an excellent form of zinc as citrates are extremely well absorbed and well-tolerated by the body.