7 Year Old w/epilepsy major issues

I do not know where to turn.  My son was diagnosed with epilepsy (generalized seizure disorder) at age 4. He is now 7 1/2 yrs old. 

He was put on Depakote initially.  Last year began to have major behavioral issues in school and at home. 

My husband and I were never quite happy with how he was on the depakote but it kept him seizure free for 3 Years. when he began getting physical I pushed to get him off it. He was weaned onto Lamictal  land completely taken off the depakote early in 2014.  It was night and day difference.  The past few months he is starting to regress again.  Tried running away twice, is biting, hitting