I sleep badly, so it is always in search of something effective for a full sleep. This melatonin, I was pleased. I take one tablet 15 minutes before bedtime. Falling asleep to some imperceptible head in the morning light and vigorous state. If I was a nervous day, I take two tablets. Morning, no weakness and no gravity. I will take another. If my review was interesting for you, please click, "YES" at the bottom.