My Children 13 Years Old Boy & 12 Year Old

My children 13 years old boy & 12 year old boy, are fixing to start taking Sandoz Injection 5.8 mg vial. What are the possible side effects? We are going tomorrow for training, at the doctors office in Ga. My kids have A.D.H.D. & are not growing they have been through a ton of testing, already. Thanks, Angie