Melatonin 5mg 240 tabs from Source NaturalsMelatonin 1 mg, 3 mg, and 5 mg tablets Melatonin is a neurohormone produced in humans by the pineal gland. A favorite of travelers, Melatonin governs the body's circadian rhythms. Melatonin is also a potent antioxidant. Supplement Facts for 5 mg Serving Size: 1 tablet Amount %DV Melatonin 5 mg Vitamin B 6 (Pyridoxine HCl) 1 mg Suggested Use: One Melatonin tablet at bedtime; one half tablet may be sufficient for some people. Do not take more than one