Kava is derived from the plant Piper methysticum, which is native to western Pacific islands. The Kava originates from Polynesian word “awa” that means bitterness. In Pacific islands, kava is used as a favorite ceremonial drink. The best effects of Kava are a reduction in stress, anxiety, and restlessness. It also helps against insomnia, benzodiazepine withdrawal and attention deficit hyperactivity disorder (ADHD). The chemicals responsible for these effects are the kavalactones, which directly affect the brain and other parts of the central nervous system. Read on how kava helps against specific health problems and what are the best ways to use kava in general and for medicinal benefits.