Khat is a flowering evergreen shrub that is abused for its stimulant-like effect. Khat has two active ingredients, cathine 
and cathinone.
What are the street names?
Abyssinian Tea, African Salad, Catha, Chat, Kat, Oat
What does this drug look like?
Khat is a flowering evergreen shrub. Khat that is sold and abused is usually just the leaves, twigs, and shoots of the Khat shrub.
How is this drug abused?
Khat is typically chewed like tobacco, then retained in the cheek and chewed intermittently to release the active drug, which produces a stimulant-like effect. Dried Khat leaves can be made into tea or a chewable paste, and Khat can also be smoked and even sprinkled on food.
How does this drug affect the mind?
Khat can induce manic behavior with grandiose delusions, paranoia, nightmares, hallucinations, and hyperactivity. Chronic Khat abuse can result in violence and suicidal depression.
How does this drug affect the body?
Khat causes an immediate increase in blood pressure and heart rate. Khat can also cause a brown staining of the teeth, insomnia, and gastric disorders. Chronic abuse of Khat can cause physical exhaustion.
What drugs cause similar effects?
Khat's effects are similar to other stimulants, such as cocaine and methamphetamine.
What are the overdose effects?
The dose needed to constitute an overdose is not known, however it has historically been associated with those who have been long-term chewers of the leaves. Symptoms of toxicity include delusions, loss of appetite, difficulty with breathing, and increases in both blood pressure and heart rate. Additionally, there are reports of liver damage (chemical hepatitis) and of cardiac complications, specifically myocardial infarctions. This mostly occurs among long-term chewers of khat or those who have chewed too large a dose.
What is the legal status in the United States?
The chemicals found in khat are controlled under the Controlled Substances Act. Cathine is a Schedule IV stimulant, and cathinone is a Schedule I stimulant under the Controlled Substances Act, meaning that it has a high potential for abuse, no currently accepted medical use in treatment in the United States, and a lack of accepted safety for use under medical supervision.
What are the common places of origin?
Khat is native to East Africa and the Arabian Peninsula, where the use of it is an established cultural tradition for many social situations.