I've been on adderall for 15 years, every month I have to go to the doctors and get prescriptions. The first question I ask is, is there anything harmful that has been discovered about the long term use of adderall. Every single time I get the same response, no. So if there is any element that is wrong with this drug its that not enough studies have been done to scientifically prove the fact that it is harmful and more importantly, doctors aren't informed well enough of the possible harmful effects the drug can have.