child on ritalin and other drugs with mom

we live in arkansas, my brother can not afford an attorney. his ex has had their son (10 yrs old) to numerous doctors and she is supposed to give 24 hrs notice before any non-emergeny drs visit. she has never let him know when she is taking him to a doctor. he started taking ritalin when he was 5 yrs. old and has since been trying other "behavior modification" drugs. the newest and current drug is something his mother found in a magazine that she wanted him to "try". this child has developed several different tics. He rubs his middle fingers and thumbs together in a circle, scrunches his nose, and most recently started clearing his throat. he does these things almost incessantly. his mother took him back to the doctor, and according to the child, he is supposed to stop taking the medication on the days he does not have to go to school. it is heartbreaking to see this child and know that he believes something is "wrong with him" when he just needs love and discipline. his mom could not deal with him when he was 5, so he has been drugged ever since. he has not grown emotionally or socially since then. we need some advice. can you tell me whether a judge can order her to stop giving him drugs until he can be re-evaluated. he has not been tested for adhd since he was 5.