Thought I'd add a success story since I have read so many posts on the web which are negative about citalopram - and I, too was scared of the implications.
First of all, I'm not medically qualified - and this is just about me. I have always been anxious, but about 18 months ago, I realised that my continual worry and anxiety was really ruining not just my life - but other people's as well ! My doctor finally persuaded me to start taking an anti-anxiety drug and prescribed citalopram 10mg.
The first few days were not too good (although not as bad as other people seem to have suffered) - felt a bit sick and couldn't concentrate, but I really didn't feel any more anxious (which was what I had been concerned about). I started feeling much, much better in myself in only a couple of weeks - and people did notice. My husband commented that I seemed more like the 'me from about 5 years ago !'.
I carried on with the 10 mg for about a year (which was longer than I had expected) and never had to increase the dose - and 10 mg is a very low dose. I never had any side effects after the first few days and felt remarkably well. I could cope with life, didn't spend hours endlessly worrying and got my confidence up.
I decided I wanted to stop taking the citalopram then, but had a chat with my GP and decided to continue for a few more months (I had a lot of hassle in my life at that time).
About 3 months ago, it came to me that it was 'time to stop' ! and this time my GP agreed. There is also a lot of concern about people coming off citalopram (and that made me scared !) but I just weaned down over a couplw of weeks (again, everyone is different - and how long you need depnds on you) and had really no side effects.....I was worried about 'brain zaps' and all of the other things I read on the web, but didn't have any of them.
Since I stopped, life has thrown me a couple of things to get really anxious about, but I do seem to have got over my long term anxiety and have taken them in my stride.
I would say 'go for it' - it's a bit scary, but chances are you will feel better in a couple of weeks - and for me, it was really worth the experiment.
Hope it worked out for you !