Melatonin is a natural hormone secreted by the pineal gland that regulates the human biological clock. Normally, the body makes melatonin for several hours per night, thus regulating the wake-sleep cycle. The body’s production of melatonin decreases with advancing age. Melatonin also has beneficial effects on immune function. Supplemental melatonin can help compensate for reduced body synthesis and regulate sleep patterns during times of disrupted quality of sleep, such as may occur with jet lag or other alterations of the body’s natural sleep patterns. However, because melatonin is a potent hormone, it should be taken only with the supervision of a doctor. This product contains pharmaceutically pure melatonin supplied in vegetarian capsules. This product is free of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat/gluten, corn, yeast, and soybeans. Contains no artificial colors, flavors, or preservatives.