Melatonin is a drug that replenishes melatonin in the body, in fact, the human pineal gland also secretes the hormone, its called melatonin. The secretion of melatonin is limited periodically, for example, it is secreted very little during the day and reaches its peak at 2 am at night, but as we age, the amount of melatonin secreted by the body may decrease, so proper supplementation of melatonin has certain benefits, it can increase sleep time, improve sleep quality, and also relieve depression and other symptoms. It must be noted that the lack of melatonin in the body must be determined before the use of melatonin is recommended, not long-term use, but also through appropriate physical exercise, dietary regulation, life patterns to improve the regulation of sleep.