Valerian is native to Europe and western Asia. The medicinal properties of valerian were well known at least since Roman times. Valerian root is a general tranquilizer used for relieving nervous tension, insomnia and headaches. Valerian decreases muscular spasm, being useful in cases of nervous digestion, bowel syndrome, stomach and menstrual cramps. Valerian helps relieve stress and has become an increasingly popular remedy in recent decades. It is a safe, non-addictive relaxant that reduces nervous tension and anxiety and promotes restful sleep.