"i&#039;ve been on sertraline for 5 months now i started out at 50mg and it seemed to be ok my anxiety attacks were becoming far less and i was a lot happier then about 3 months later i found i was having panic attacks again and now for the last month i&#039;ve been on 100mg my mood is so bad it&#039;s affecting my relationship and i always just feel down and worthless i&#039;m going back to the doctor soon to hopefully sort it out"