Methylphenidate
adhd
"It does work, depending on your dosage. But when I use it I find that I'm hyperactive, jittery, over excited, slightly aroused, and sometimes in a good mood (but that changes when it crashes). It's similar to coffee in its side effects but it lasts much much longer. After I come home from college I find I'm depressed (on occasion), still jittery, still "wound up", sometimes exited, and very uncomfortable. While it does help me focus it is not pleasant to be on it. I took the 54 MG dosage but I have been on smaller dosages before and has the same issues. Also when driving I feel like it lowers my ability to drive but I'm not 100% sure if it does or if its my imagination."