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) is a flowering plant native to the Horn of Africa and the Arabian Peninsula.
Khat contains the alkaloid cathinone, an amphetamine-like stimulant, which is said to cause excitement, loss of appetite, and euphoria.
It has evergreen leaves, which are 5–10 cm (2–4 in) long and 1–4 cm (0.39–1.6 in) broad.
Other than access to sun and water, khat requires little maintenance.The stimulant effect of the plant was originally attributed to "katin", cathine, a phenethylamine-type substance isolated from the plant.However, the attribution was disputed by reports showing the plant extracts from fresh leaves contained another substance more behaviourally active than cathine.The effects of oral administration of cathinone occur more rapidly than the effects of amphetamine pills; roughly 15 minutes as compared to 30 minutes in amphetamine.
Khat can induce manic behaviours and hyperactivity, similar in effects to those produced by amphetamine. Dilated pupils (mydriasis) are prominent during khat consumption, reflecting the sympathomimetic effects of the drug, which are also reflected in increased heart rate and blood pressure.the khat plant has over the years found its way to Southern Africa as well as tropical areas, where it grows on rocky outcrops and in woodlands.