4 is way too young. You really have to see some practical application like school (Past 1st grade) before you can even think about that as an option. Hard medication like this is not ment for a developing child's mind. The parents choice is what they see best for their child though. Hopefully it's right. And ANYONE can get ADD ADHD meds. I could walk in and get some addy/concerta/vyvance if I just said "I cant focus" it's money making.
I don't remember how old i was when i was diagnosed with adhd,but i have been taking concerta most of my life.
4 years is not young to be diagnosed with adhd, Actually, for a diagnosis of ADHD, a child should have symptoms of inattentiveness and/or hyperactivity before the age of 7. I think we often don't diagnose ADHD at age 4 because it does not affect a child's ability to function.