Also know as Khat, quat, qat, qaadka, chat,

Khat is a stimulant with similar effects to amphetamine. It comes from a leafy green plant of the same name. Used mostly in Africa, Khat is getting more common in Europe particularly in immigrant communities.

It is chewed over a number of hours and a small bunch of leaves costs around £4. Chewing it can make people feel more alert and talkative. Although it is a stimulant, many users report a feeling of calm if chewed over a few hours. Some describe it as being 'blissed out'. It can also suppress the appetite.

Khat can make a user psychologically dependent so when they stop using it they feel depressed. If you use it a lot, you may develop insomnia, heart problems and sexual problems like impotence

It can give you feelings of anxiety and aggression with some people finding that it makes them irritable, in some cases very angry and even violent. There is some evidence to suggest that it can make pre-existing mental health problems worse.

Khat is not an illegal drug in the UK. It can be used or traded without penalty, however it is an illegal substance in many other countries like the US.