Clitoria ternatea (Family: Fabaceae) commonly known as 'Butterfly pea', a traditional Ayurvedic medicine, has been used as memory enhancer, antistress, anxiolytic, antidepressant, anticonvulsant, tranquilizing and sedative agent. The extracts of Clitoria ternatea possess a wide range of pharmacological activities including antimicrobial, antipyretic, anti-inflammatory, analgesic, diuretic, antidiabetic properties. This review is an effort to explore the chemical constituents and the pharmacological study of Clitoria ternatea, which have long been in clinical use in Ayurvedic medicine.