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. 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.
However, it can reach heights of up to 10 m (33 ft) in equatorial areas.
The plant usually grows in arid environments, at a temperature range of 5–35 °C (41–95 °F).
Among communities from the areas where the plant is native, khat chewing has a history as a social custom dating back thousands of years analogous to the use of coca leaves in South America and betel nut in Asia.
It is a controlled substance in some countries, such as Canada, Germany, the United Kingdom, and the United States, while its production, sale, and consumption are legal in other nations, including Djibouti, Kenya, Uganda, Ethiopia, Somalia and Yemen.
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