Sisu Zinc Citrate - For overall immune system support and for general health and maintenance of the prostate. Sisu Zinc Citrate contains a powerful 30 mg of Zinc Citrate and should be part of anyone's nutritional supplementation program. Zinc supplementation has also proven beneficial in promoting healthy hair, skin and nails. Zinc promotes the production of T-Cells, is a player in balancing cholesterol, and is beneficial for healthy liver and brain functions, and for healing wounds.