Scientists consider kava ( Piper methysticum ) a narcotic and a hypnotic, but not a hallucinogen or a stupefacient. It is used throughout the South Pacific as a social intoxicant, an aid to religious inspiration, and as medicine for a number of conditions. Here is a review of the literature on kava's botany, chemistry, ethnobotany, pharmacology, social usage, distribution, and the economic potential for its spread beyond the region. Annotation copyright Book News, Inc. Portland, Or.