Adderal, its everywhere, and not much in the way of side effects. Taking it while you are in the thick of a task is the way to do it; once it sets in you are working at 150% pace with undivided focus. This is the drug of the future. Much more sustained focus from caffeine, and no stomach discomfort or nausea that you might encounter with high caffeine doses. This drug, along with ritalin, are designed such that you can't get a high enough concentration of the drug in your blood to trigger any physical dependence or tolerance. Plenty of my friends have prescriptions, and doctors generally prescribe enough to be on the drug every waking hour for a month, whereas they might only need to take it a couple times a week for focusing on a specific task, so people whose ADD symptoms are milder tend to build up a surplus.
I don't agree that it's the miracle drug you're indicating.
First off, the effectiveness in diagnosed add / ADHD people vs people just using it doesn't seem to be 1:1. For example, it gets me focused on relevant tasks, whereas my non ADHD friends could easily get sucked into the infamous "clean the entire house" funnel. Or, it just makes them anxious.
I also suspect it dramatically reduces my emotional reaction to things, including art. I feel like it robotocizes me. Sure, I'm more effective, but time seems to just slide by without having any real impact on me. The weeks I don't take it seem to automatically be more "colorful" in my long term memory.
It's certainly made my life a hell of a lot easier as someone with ADHD, but I wouldn't sing its praises as a side-effect-less drug. If anything, the side effects are insidious in a dangerous (emotionally) and undetectable way.