Gamma-hydroxybutyrate (GHB) is a depressant drug that contains sedative and, at sufficient doses, anaesthetic properties (that means it knocks you out). Depressant drugs slow brain and central nervous system activity.
GHB has been identified as a 'date-rape drug' because it leaves users with amnesia, impaired movement and speech. It can be easily camouflaged in drinks as it is difficult to taste.
This page was last reviewed in March 2014.