Since falling asleep is bad, when I was stationed in the United States in the work, I was drinking melatonin occasionally. Recently also often heard that of serotonin, 5-HTP is, changes to the daytime serotonin, to hear that change to it is more melatonin after dark, morning grain, you have to drink a grain every night. Every day is a very exhilarating, it has been recommended to friends.