A plant, Catha edilis, found in East Africa and the Arabian peninsular. The leaves are chewed to give a mildly stimulating and euphoric effect. Its activity comes from two alkaloids: cathine and, in fresh leaves, the more potent cathinone. It is a controlled substance in many countries including the US. In the UK, where it is mainly used by certain Somalian and Yemeni ethnic groups, khat became a class C drug in 2014 owing to its increasing use. Possession of the drug can result in up to two years in prison and an unlimited fine.