L-Tryptophan
L-Tryptophan is an essential amino acid that is found in many foods and is also available as a dietary supplement. It is used for a variety of conditions, including insomnia, sleep apnea, depression, anxiety, facial pain, premenstrual dysphoric disorder (PMDD), smoking cessation, bruxism, ADHD, Tourette’s syndrome, and to improve mood in healthy people with sleep…