When did you decide to medicate your ADD child?

[grumpydwarf]

My DS 9 was diagnosed with ADD 2 years ago. He has previously displayed "mild" symptoms which mainly have included short attention span and lack of concentration. This year he seems to really struggle with listening and his temper and in the last 2 weeks at school he has been playing 2 rough with the other kids and hurting them.
He can't seem to tell me why he's been behaving like this and he knows it's wrong but is struggling to control himself.
I've previously been offered medication for his concentration but because he sleeps and eats really well I've been reluctant to medicate him unnecessarily.
Could anyone tell me how old their clod with ADD was when they started medication and what made them decide to medicate?
Also any advice on hold to deal with this? The teacher told me on Friday that the other children are becoming reluctant to play with his due to his behaviour and it kills me to hear that.
TIA

Just started. He's 9 and his school (specialist) suggested it to help with focus and social interactions. We're not sure yet if it's making any difference but his main diagnosis is ASD so that may be a factor. No real problems with sleep or eating so far and he's been on it for 2 weeks.

Hi. DC1 was 7 but he was full blown adhd who did cartwheels round the classroom for fun . DC2 has asd and was diagnosed add at 9 and we started him on meds. His concentration at school is so much better. But he is a massive grumpy guts at home at times with angry outbursts but I thinks that's being 9 tbh

And dc2 says he likes how meds make his mind quiet. He has had big chats with his add dr about how he feels and he def pref meds when he is at school