If my dad were in a care home situation, then I would probably ask that his Quitiapine be reduced _ I don;t particularly like him being on it.
However, that is in a care home situation, in which there would be a number of professional staff to look after him. They would be caring for a "stranger" as it were (not a loved one) and would have the support of each other, and more importantly, have breaks away from it.
The situation at home is quite different. We could not possibly cope 24 hours a day with dad's relentless paranoid delusions/obssessional behaviors where he would rant for literally days at a time about the "evil neighbours" and every single day would force us to go and view the new "evidence" that he had found to confirm his delusions or come up with new claims about what "they" had been up to. This became so bad that it nearly drove mum and myself into nervous breakdowns, because it would go on and on, without break.
It sounds dreadful to say this, but we could not escape dad - there was no break from it, and it gradually ground us down. Which was his intent (he has always used this method of getting his own way - he will just relentlessly argue that he is right, and make everyone's life a misery, until we give way - for as long as I can remember)
The drugs have not made the problem entirely disappear, but they have made it manageable.