?Corvalol (Корвалол, Corvalolum, Korvalol) is a tranquilizer based on the herb [[valerian (herb)|valerian] Valeriana officinalis] root, as well Peppermint oil [Mentha Piperita] and Hop extract [Humulus lupulus] and the barbiturate phenobarbital, popular in Eastern Europe and the former Soviet Union as a heart medication. It is available as a transparent liquid with a characteristic strong aroma, and as white bi-concave scored tablets. While not available for sale in the Western countries, Corvalol is sometimes brought over from Eastern Europe for self-administration to other countries of residence.