Yh i know what you mean. i'm the same, i only need to take one paracetemol to get rid of a head ache.
They put me on 300mg of seroquel then upped it to 600 the next day, i knew it was way too much, but i dont know why no one else sees it.
They put me on 10mg of prozac and i ended up in hospital with suicidal mania!!
But i didnt react like that to citalopram, i didnt get any affects really until i went to 80mg.