need help

hi everyone im very new at this im really not sure how to do this yet im just trying ok i need advise on how to get my two sons to get along better and not be so abusive to each other the lil one seems to be the receiver and the older one the giver they are both adhd and add and odd i think the lil one has been diagnosed and is being treated for adhd and depression and anxiety and they just started him on prozac and rispertal and he has been taking aderall for a couple weeks now before he was on straterra but that didnt work the oldest has not been diagnosed yet i mean when younger he was but when he moved in with his dad he did not continue the treatment and ive not been able to set him up as of yet my family doc just gave him risperdal to help him sleep but since he stareted thet he seems even more aggressive i feel like im going crazy all they do from the time they get out of school is argue the older one usually starts it or the youngest will cry when he dont get his way and then its really on the oldest will taunght him or scream at him to shut up or call him names then man is it on i feel helpless sometimes anyone have any advise?