I have had ADHD since I was a child, so I can and do take these drugs(Vyvanse) when I go to work/school. Even though I have ADHD I feel like they give me an edge over those that do not take them, from my perspective I seem to have better concentration than my peers.
The people with ADHD have the so called "hyperfocus". It's like the flow, but you cannot stay in it if there are distractions. Pills help to ignore those distractions. You are more resourceful by training (from your condition), pills just enable you to show it.
The real issue with hyperfocus is not so much being distracted out of it as not being able to target it. Sure, you can sometimes focus on something for 6 hours, but if it is the wrong thing, then you can blow through deadlines like nobodies business.
When I started on ADHD medications, the biggest thing I noticed was that I would worry more, and then actually adjust my focus to those problems.
Wow I've never heard of this but I can definitely see it in myself. I'm pretty much useless on days when I forget my medicine, but usually more productive than others then I do take it.