Medicine change symptoms and conditions

My 10 yr old is taking Concerta and it is the worst thing that i have every seen happen to a child. i am looking into ways to get him off the medication. it is horrible. he is fine during the day but in the evening he is a totally different person. Annoyed and irritated all the time, sad, angry, aggressive, mildly violent. he has melt downs every night and lately they have been lasting for 4 hours. no one is getting sleep and it is very stressful for the family. this drug should be banned....