Methamphetamine tablets/pills, which are generally a composite of methamphetamine and caffeine, are often referred to by their Thai name, ya ba ("crazy medicine"). Tablets are the predominant form of methamphetamine used in mainland Southeast Asia (Cambodia, Lao PDR, Thailand, and Vietnam). Typically, the tablets have an inscription which can provide indications of the origin of the tablet, chemical composition (and thus treatment), as well as possible trafficking routes. Pills are often ingested orally, and they can also be crushed into powder and smoke).
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