What drugs help aggression in Alzheimer's patients?

After a 5 week hospital stay, my mother who has severe dementia became extremely delirius and aggressive, while she was in hospital they administered Olanzapine at night and serepax during the day. Both were minimal in their positive effect. On leaving the hospital a geriatrician prescribed Risperadone at .5mg nightly, which has minimised the agression as well as the fact Mum is at home and feels safe again has created a calmer atmosphere, but I do believe the Risperadone has helped at lot during the early days after hospitalisation. I only give my Mum .25mg at night as it has a few worrying side effects.. and this dose seems to work and I have not needed to give Serepax during the day. One of the side effects which is a bit of a problem is the increased urination and incontinence at night, but better this than the crazies in the afternoon... such a horrible, horrible disease!!

I can't say what might help but from experience with my father I can say don't put him on Seroquel and/or Haldol -
I suggest reading up on any new meds prescribed for him
Good luck

Talk to his doctor about Ginko Biloba. That stimulates the mind. This just may help.