5-HTP increases serotonin. Serotonin is a naturally occurring chemical by-product that plays a critical role in the brain and central nervous system. One of its main functions is to regulate levels of serotonin, which can affect sleep, appetite, body temperature, sexual behavior, and pain sensations. Due to its impact on these vital functions, serotonin is used to treat a wide range of medical conditions, including sleep disorders, depression, anxiety, migraine and tension headaches, fibromyalgia, obesity, premenstrual symptoms (PMS), premenstrual dysmorphic disorder (PMDD), attention deficit hyper-activity disorder (ADHD), seizures, and Parkinson's disease.
