Bulk melatonin powder the well-known function of melatonin is mainly to improve sleep quality (dosage 0.1~0.3mg), shorten the time to wake up before going to bed and fall asleep, improve sleep quality, significantly reduce the number of awakenings during sleep, and shorten the light sleep stage. , the deep sleep phase was prolonged, and the wake-up threshold decreased the next morning. Has a strong function of adjusting the time difference