Kava or awa as it is called in Hawaii is consumed throughout the Pacific region. It tastes a bit like novacaine and is numbing. It was used before battles in Hawaii so that warriors would not be afraid of injuries. It also promotes euphoria and is thus used socially in some Polynesian cultures. It is not addictive but many people experience a slight mood elevation for up to 48 hours after consumption, usually immediately after drinking water. The effects then wear off completely. According to some kahunas, awa root will help to regenerate damaged nerve endings. There is no question but that kava kava is a nervine, but it is also a unique antidepressant due to its tendency to elevate mood through a sense of convivial happiness.
Kava kava is used in Ayurveda to balance vata derangements.