ADHD isn't just a childhood affliction. It will continue into adulthood. Generic adderall isn't that expensive, but it depends on the pharmacy. Stay away from large chains like CVS and Rite Aid. They tend to be the most expensive. I got my adderall at a mom and pop pharmacy and there was a $200 difference between what CVS wanted for the generic and what the mom and pop pharmacy charged me. I take 20mg of adderall 3 times a day and a months supply (90 pills) costs me $40.