Ask HN: Do you have ADD/ADHD? Do you take Adderall/Ritalin?

Are you a student, programmer or entrepreneur suffering from ADD/ADHD?

Do you take medicine like Adderall, Ritalin or Concerta? Does it work and how often do you take it?

I live in Denmark where that kind of medicine is not in as wide use as in the US so I am curios about it.

I am also curious whether that kind of medicine is used by both women and men to the same degree?