Gamma hydroxybutyrate (GHB) wani sinadari ne wanda ake yawan amfani dashi azaman magani na nishaɗi. Hakanan abu ne da ke faruwa a zahiri a cikin jikin ɗan adam kuma yana shiga cikin haɗar neurotransmitter gamma-aminobutyric acid (GABA). Ma'anar ƙamus na gamma hydroxybutyrate zai zama:noun: magani mara launi, mara wari wanda aka fi amfani da shi azaman magani na nishaɗi kuma ana samar da shi ta halitta a jikin ɗan adam. An rarraba shi a cikin sinadarai azaman abin damuwa kuma an yi amfani dashi don dalilai daban-daban, ciki har da maganin kwantar da hankali, maganin sa barci, da taimakon barci. Hakanan ana san shi da sunayen titina, gami da "liquid ecstasy," "liquid X," da "G."