Support for the Body's Defenses and Reproductive System. Zinc is a trace mineral that is found in virtually every cell of the body and is a component in over 200 enzymes. Zinc is especially important in proper immune function wound healing sensory functions sexual function and skin health. It is also required for proper action of many body hormones including insulin growth hormone and sex hormones. Zinc Citrate is an excellent form of zinc as citrates are extremely well absorbed and well tolerated by the body.