I only wish my daughter had been diagnosed early and medicated. She wasn't diagnosed until she was 12 and had already started showing signs of depression from all the constant stress she was going through. I just didnt know any better back then. But be very sure you have done your own research as to the benefits vs side effects. Also you must be very sure of the diagnosis.
Some docs are too quick to do a medication trial without making an accurate diagnosis.
You should get a thorough and accurate diagnosis with a specialist not the pediatrician or fam doc. They are just not trained for that. Be cautious about alternative treatments that are not backed by good research, but don't discount them entirely. I am concerned that your child should not be started out on Concerta but othe plain ritalin as it is the easiest to start with very small doses and work up to find just the right ond for your child. Then you can figure out the same dosage for the Concerta and use that as it lasts much longer and she doenst have to take it during school.