I've been on 20mg citalopram for 6 months now. I was put on it after my mental health plummeted and I was suffering panic attacks and agoraphobia. A few months in I felt absolutely amazing, no anxiety or depression and was happy and coping with life. 2 weeks ago I noticed I was starting to get some anxiety again, I then got unwell and it set me off again and I was having panic attacks. Luckily, I didn't end up in as bad a place as I was the first time but I'm still suffering some lingering anxiety and low mood. Is this normal after 6 months on them? I would of thought they'd be at their peak so it worries me they aren't working anymore!