Resentful and angry mom

my 13 ur old son was just diagnosed with mild aspergers along w ODD and has ADHD since he was 5. Most of his behavior was manageable until about a year ago and since it's been a nightmare. While my son is not violent he is breaking our family down. His latest thing is claiming my husband and I verbally and phycially abuse him and has made these terrible allegations to our family and others - he twists everything around and blames us solely and never takes responsibility. As parents of these kids and as I can imagine things do get a bit hairy and when we r at our wits end we do yell- but we have never been physical and it's heartbreaking that he has made these serious allegations. He lies all the time now and we never know what to believe. He loves drama and has no awareness of his actions - as soon as there is a consequence out in place he flips out. I have another son who thankfully doesn't have any behavioral issues but we are afraid that all the constant arguing and chaos will affect him. Furthermore he has no friends and is always getting bullied. Just recently put him on Prozac and Concerta and see a little difference. We are just at a loss and so angry that he accuses us of these terrible things and then wants to go have dinner or to the movies like nothing's happened  

Was wondering what meds have worked for u?

is it normal that I hate my son but would take a bullet for him. I'm so tired and worn out. 

Any advice is welcomed!