Hi Steve I've been on and off cit since i was 18 and its always worked brilliantly for me but this time around it was absolute hell, the side effects were unbearable but i stuck it out for 4 months before admitting defeat, my psychiatrist said its common for ADs not to work as well or at all second or third time around as your body gets sort of immune to that certain AD, i then tried mirt which sent me a suicidal mess andso was quickly changed to venlafaxine which Im still struggling to get the dosage right, all i can say is don't struggle on for months like i did hoping the cit will kick in cause those months were the worst of my life so i understand exactly what your going through now x x