Kava or kava kava is a crop of the Pacific Islands. Kava Kava is an herbal remedy that's made from the roots of Piper methysticum -- a type of plant found in the islands of the Pacific Ocean. Kava is a beverage or extract that is made from Piper methysticum, a plant native to the western Pacific islands. Kava kava is an herbal remedy that people use to relieve anxiety and promote sleep. What Is Kava? Share on Pinterest. Kava is a drug made from the ground roots of a plant found in the South Pacific.