Valerian is a flowering plant, the root of which is dried and used as an herbal remedy. Valerian is most commonly used in alternative medicine for sleep disorders, especially the inability to sleep (insomnia). Valerian root minimizes the time it will take to sleep, lengthens the rest period, and decreases restlessness while asleep. Valerian is used as an antispasmodic, particularly for abdominal cramps due to nervousness and for uterine cramps and menstrual agitation. It helps relieve dysmenorrhoea and it can be of benefit in migraine and rheumatic pain. It may also be applied locally as a treatment for cramps and other muscle tensions. Other uses have included treating anxiety, depression, attention deficit disorder, chronic fatigue syndrome, tremors, epilepsy, menopause symptoms, and is also used as a mild tranquilizer for people experiencing emotional stress.