Anti-Epileptic Drug impact on users with Autism

There is a lot of talk in the media currently about how Anti-Psychotic medication can adversely affect those with Learning Disabilities, Autism or other Mental Illness. My son takes AED's and has severe learning disabilities as well as Autism and these drugs have the effect of increasing his level of anxiety and depression considerably, though sadly not really controlling his Epilepsy. I have asked the question of Neurologists about the impact these drugs may be having in the same way as the APD's and a little surprisingly, I'm being told, it's uncertain, and consideration is being given to prescribing anti-depressants on top!

I wonder if anyone in the forum has any experience of or knowledge of the impact of these drugs on someone with Autism?

Many thanks