i have anxiety and depression. i was on 15mg all was ok at the start i thought wow this stuff is good,then it kind of leveled off so i went back to the doc and im on 30mg ,i feel at 15 mg they were stronger and felt happier than i do on 30mg i dont really no whats going on,could it be because im used to the tablets now and im not noticing a change.slightly confussed.