we are up to 15mg of memantine and it doesnt seem to be working too well. hes still arguing, issuing orders and demands, all about his wants and likes. i said that it doesnt seem to be working so he said he wouldnt take it. it is just another bargaining tool for me to keep quiet. it nots so prolonged but it seems like he feels threatened now i can go out. im giving the memantine a chance to work. hes got to do his barium meal and swallow today and i will get it right this time. he has to starve for 6 hrs so i will leave him bed for longer.my oldest son will take him.