If you need help falling asleep and staying asleep, try Extended Release Melatonin from Nature Made. With 4 mg melatonin per serving, these specially formulated dual action tablets have been clinically shown to sustain melatonin levels in the body for 6 hours. Melatonin is a hormone produced by the pineal gland and released at night, signaling the body that it is time for sleep. The body's production of melatonin decreases with age and can be disrupted by travel, shift work and more. Supplemental melatonin can help get you back on track to getting the rest you need.