They do. If you don't have a diagnose, be careful with it. You want to be able to execute challenging mental tasks without it. You will still be able to do that after trying such medication, but you will always know, there would be a easier way to do it and that can become a mental block.
There's no evidence that they actually help people that don't have adhd. it'll just make them _feel_ like they're doing better, in spite of any objective measure.
consult a doctor. they're probably controlled substances in your area, and people trying to get them illegally makes it all the more difficult for people that actually need them to live a healthy life.
With the same attitude like any other drug, I guess. It's very likely less harmful than other drugs. If you're mindful about it and you really want to try it, then ...
