Most people I knew who were on them weren't taking the dosage they were being prescribed. The side effects were too much taking it daily, so they would just use it if they were spending a lot of time in the library that day, and would end the month with half the bottle still by the time they reupped. Just because you have ADHD and benefit sometimes from these meds doesn't mean you feel great being on them 100% of the time nor need to be taking them if you are not doing anything mentally demanding that day. It's basically meth lite, after all.
My experience is that I feel significantly better when I am on my meds and am able to function consistently. I envy people who function well enough off their meds that they can be choosy about when they take them. I have no experience with meth but my understanding is that it is only superficially similar to meth.
