Melatonin is a hormone produced from the pineal gland which is nested at the center of the brain. Melatonin production declines as we age, from a 50% loss in production at age 45 to a slow trickly at age 80. This decline in Melatonin production is considered a major cause for insomnia. Sound sleeping habits promote healthy, happier and longer life spans.* Melatonin works in harmony with your natural sleep cycle to promote relaxation and sleep so you can wake up refreshed and revitalized.* Unconditionally guaranteed for purity, freshness and label potency. No added Sugar, Yeast, Preservatives, Artificial Flavors or Colors. 21st Century Vitamins and Supplements are manufactured in a cGMP facility under the strictest standards for product quality, including potency and purity. 21st Century prides itself on providing you with a great product at the best value. *This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.