Modern physicians recognize stimulants as “the No 1 evidence-based treatment for ADHD”, says Dr Owen Muir, a Brooklyn-based psychiatrist who specializes in treating the disorder. “It’s one of the most effective treatments in all of medicine, for any condition. These things work extremely well – once you get to the right dose for somebody, it’s not subtle. Like, ‘Wow, I can really focus now.’” The Guardian spoke to a dozen ADHD patients for this story and all agreed. “These meds are life-changing for us,” Erik, the Seattle grocery clerk, said.