IRCT20100520003979N7 IRCT 2018-06-11 Ahvaz University of Medical Sciences Efficacy of pramipexole treatment and methylphenidate for attention deficit hyperactivity disorder Efficacy of pramipexole treatment and methylphenidate in children with attention deficit hyperactivity disorder, compared with placebo and methylphenidate 2018-05-22 anticipated 10 Complete https://irct.ir/trial/31159 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: Randomization was done by random number table, Blinding description: The patient and the therapist are not informed about the medicine they received. 2-3 attention deficit hyperactivity disorder. Intervention 1: Intervention group: children will be treated with Methylphenidate and Pramipexole during 12 weeks. The starting dose of methylphenidate will be considered to be 0.3mg / kg in two divided doses and will be increased to 1mg/kg based on need. Pramipexole starts with 0.125 mg every night. Then the dose will gradually be increased based on clinical response and tolerance to side effects. The final dose for pramipexole will be up to 0.5mg a day. Intervention 2: Control group: children will be treated with methylphenidate and placebo during 12 weeks. Placebo pill are will be similar to shape, color, smell and taste are like pramipexole. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No more information