We put my grandson on Ritalin at age 5. He needed it. The psychiatrist refused to write the prescription until we had a professional evaluate him and determine the diagnosis of ADHD. We had a psychologist do one eval, the ABC clinic at OU Health Science Center, and we had the psychiatrist do her own questionnaire. Every group came up with very similar answers.
We started him off with half a pill of the lowest possible dose. He did so extremely well with that dose! We added 1/2 pill at noon in a couple of weeks. It made a huge difference in his afternoon performance in kindergarten.
In first grade we have upped the dose to a whole pill of a morning and still half at noon. By the time he comes home the meds are completely out of his system.
This is one thing we entirely like about Ritalin. It does NOT stay in their system, it does NOT build up. It is completely gone in a few hours. I like that. We don't have to worry about side effects or dangerous levels of anything. He's completely med free at about 3 1/2 hours.
I think if you've had a professional that is QUALIFIED to diagnose this brain issue then you've done the right thing. Many times a family will have their pediatrician do the eval and in my opinion they are not qualified to diagnose this.
It's like this. If you have a heart condition that needs medical treatment for years to come would YOU go to an OB/GYN for your heart condition? Or would you seek out a great Cardiologist? You'd probably go to the heart doc. Most of us would. Could the OB/GYN determine there was an issue with your heart? Of course they could. BUT would they know ALL the current methods of treatment? No, would the OB/GYN know how to surgically repair any heart issues? No, only the Cardiologist would be qualified to provide that care.
So I trust a doctor who's main job is to prescribe medication for brain issues.
Start him off on the absolute lowest dose possible. See how it effects him, have the teacher keep a log of any possible side effects too. She may see more since he'd be taking the meds for the school day.