i don't think many people have, its considered a "drug" in the US but it's basically just chewing sticks, nice euphoric feeling, supposedly it has similar effects to cocain, but im not interested in coke, so never tried.
it's commonly used by Arab's...like me (if i could find any round here) and grows in desert climates, good natural high no negative effects that i'm aware of and unfortunately illegal...yup even things no one has heard of are illegal.....