Yaba, or 'crazy medicine' in Thai, is a tablet form of methamphetamine, and a very powerful stimulant. Introduced to East Asia during World War II to enhance soldiers' performance, methamphetamine has become increasingly popular in East Asia, particularly among young people. Yaba is now the main form of methamphetamine abused in Thailand, Laos and Cambodia as well as Viet Nam and Myanmar, where it is typically manufactured.
