Yeah, concerta is adjacent to Ritalin. Similar chemicals with similar effects from what I understand of it (I’m neither a doctor, nor a pharmacist).

I was “diagnosed” with ADHD, by my family physician, it’s not a full diagnosis, that can only be done by a psychiatrist, which I haven’t done.

I take it in the morning and by the end of the day, I’m usually tired enough to sleep at an appropriate hour. I don’t take it for that reason, it’s a happy side effect. The primary effect is restoring some level of control over my focus. Ita been doing a good job so far.