Enhance your immune system while getting better sleep. Safe in combination, zinc is involved in the production of melatonin, and melatonin increases the absorption of zinc. This blend has been shown to have many benefits, such as improving immune system activity and the sleep cycle, helping lessen fatigue, and aiding in memory, concentration, motivation and functional activity. 60 capsules (30-day supply). Made in USA. **These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.