Commonly known as blue trumpet vine or laurel clock vine, Thunbergia laurifolia is a popular ornamental vine in the
tropics. Flowers are attractive with pale purplish-blue petals and a yellow throat. Leaves are heart-shaped with a pointed
tip and slightly serrated leaf margin. In Thailand, leaves of T. laurifolia are believed to have detoxifying effects. They are
used as an antidote for poisons and drugs, including the treatment of drug addiction. The plant has also been reported
TOÒHAVEÒANTIOXIDANTÒANTI
DIABETICÒANTI
IN¹AMMATORYÒANDÒANTIPYRETICÒPROPERTIESÒ,OCALÒHERBALÒCOMPANIESÒAREÒPRODUCINGÒ
herbal teas and capsules of T. laurifolia, known as Rang Jeud in Thai. Compounds isolated from the leaves included
IRIDOIDÒGLUCOSIDESÒGRANDI¹ORICÒACIDÒGLUCOPYRANOSIDESÒANDÒDERIVATIVESÒOFÒAPIGENINÒ/THERÒCOMPOUNDSÒFOUNDÒINÒLEAVESÒ
ANDÒ¹OWERSÒWEREÒDELPHINIDINÒDERIVATIVESÒANDÒPHENOLICÒACIDSÒOFÒCHLOROGENICÒCAFFEICÒGALLICÒANDÒPROTOCATECHUICÒ#URRENTÒ
knowledge on the pharmacological properties of the species is reviewed. Properties reviewed include antioxidant,
ANTIMICROBIALÒANTIPROLIFERATIVEÒHEPATOPROTECTIVEÒANDÒANTI
IN¹AMMATORYÒACTIVITIESÒASÒWELLÒASÒDETOXIFYINGÒANTI
DIABETICÒ
and non-toxic effects.