Can melatonin really help sleeping without addiction?

Yes: lower doses of melatonin (0.5 mg) actually work better than higher doses (like 3 mg) in most people. Melatonin is a hormone produced by the pineal gland in the back part of the brain in response to light changing to dark, and malfunctions in many people, particularly those using sleeping pills regularly. It is a natural substance and does not produce dependency.