Abilify made my son extremely hyper! He was up for 48 hours with no end in sight. It is hard to know if that will be the same with your son, since each person is different. However the 2 antipdepressants your son is taking, might be making him really irritable, high strung, impulsive, and unable to control his emotions since most BiPolar (BP) patients do not do well on SSRI's like Wellbutrin and Lexapro. As far as dosage, I think 20mg is a somewhat normal dose - but I am not a DR. - that was just the dose my son was on when he was 12. If I were you I would check out new doctors.........the fact he/she is suggesting 2 SSRIs for a patient with BiPolar (BP) is concerning to me.