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It is secreted by the pineal gland after your body senses the fall of darkness at the end of each day. Melatonin keeps your body synchronized with the rhythms of day and night and is a powerful antioxidant that supports immune system function. As melatonin levels decline with age, supplementation is necessary to provide optimal levels of this important hormone. Scientists believe this reduction is the reason why older adults have more trouble sleeping than younger people. Colorado Nutrition Melatonin is a synthetic dietary supplement. Natural Melatonin is normally derived from animal pineal tissue, but concerns have arisen over the survival of unwanted microbes during the manufacturing process. At American Nutrition, our fast turn over of inventory assures you are getting the freshest Melatonin products available. Try our brand Colorado Nutrition Melatonin 3mg 180 Vcaps for exceptional savings and value. 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