Glossary – K
This drug started out as an anesthetic, but became a widely used recreational drug due to its hallucinogenic effects. Known as Special-K or Vitamin-K, it is typically snorted, but is sometimes sprinkled on tobacco or marijuana and smoked.
the leaves and buds of an East African plant, Catha edulis, which are chewed or brewed as a beverage. Used also in parts of the Eastern Mediterranean and North Africa, khat is a stimulant with effects similar to those of amphetamine. Heavy use can result in dependence and physical and mental problems resembling those produced by other stimulants.
a phenomenon in the brain that produces a heightened sensitivity to repeated administrations of some drugs, such as cocaine. This heightened sensitivity is the opposite of the phenomenon of tolerance.
Korsakov syndrome (Korsakov psychosis)
see amnesic syndrome.