Habitat: Evergreen forests of Assam and Khasi Hills.
English: Siam Gamboge.Ayurvedic: Kankushtha; Kaalakushtha, Tamaala.Unani: Usaar-e-revand.Action: Gum-resin—drastic hydragogue, cathartic; used for dropsical conditions. Toxic. The gum-resin contains 70-75% resins consisting mainly of alpha- and beta-garcinolic acids with gambogic acids; about 20-25% gum.
Gambogic acid, morellic acid and isomorellic acid are toxic constituents of the gum-resin.