Melatonin may be helpful to support a restful night’s sleep.* Helps support normal circadian rhythm. Wake up feeling fresh and energized. **These statements have no been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any diseases. [Gluten Free, Dairy Free, Yeast Free, Wheat Free, Vegan] What is Melatonin? Melatonin is a natural hormone made by your body's pineal (pih-knee-uhl) gland. This is a pea-sized gland located just above the middle of the brain. During the day the pineal is inactive. When the sun goes down and darkness occurs, the pineal is "turned on" by the SCN and begins to actively produce melatonin, which is released into the blood. Usually, this occurs around 9 pm. As a result, melatonin levels in the blood rise sharply and you begin to feel less alert. Sleep becomes more inviting. Melatonin levels in the blood stay elevated for about 12 hours - all through the night - before the light of a new day when they fall back to low daytime levels by about 9 am. Daytime levels of melatonin are barely detectable.