Hello Gaye,
I'm conflicted about any child taking any medication (especially Ritalin and those other ADD/ADHD pills). Only if it's necessary to treat symptoms of an actual illness for which the kid is experiencing traumatic symptoms.
If your grandson has schizophrenia and needs to be on Abilify (or maybe he has bipolar), you need to talk to his doctor about the best dosage.
10 years old is young to be on medication, yet if it's necessary, by all means he should be on the meds.
Only in consult with his doctor will you know the best dose.
If your gut feeling is that you don't trust the doctor, get a second opinion.
It's imperative that you get a second opinion.
I recommend that if your grandson is 10 years old and on Abilify, you definitely get a second opinion from a qualified doctor you feel you can trust.
Respectfully,
Chris