Can you tell me about it's like to try khat, it's african leaves that are chewed for their stimulant effect?

Patients who use it: have told me that, when used as it usually is in East Africa (brewed into a tea and consumed over the course of hours) that it is maybe a little more stimulating than a good strong cup of espresso. When smoked or when higher quality leaves are used, it can be similar to Cocaine or amphetamine. When chewed, it is pretty much like the tea - a very mild stimulant.