Hi Daisie, I'm on Duloxetine which is an SNRI. I've tried a huge number of ADs and either had terrible side effects or no result at all from all the others. I'm taking this one in combination with Quetiapine, which is an anti-psychotic which has mood stabilising and anti-anxiety qualities, and I think has prevented a reaction like the previous ones. This was all prescribed by a psychiatrist in the psychiatric hospital I ended up in for 5 weeks, after taking an overdose 7 weeks ago. So things had to get really bad to find a truly effective treatment.
Valium(diazepam) is addictive in a very different way from ADs (and as CLKD says, many ADs now aren't addicitive anyway). The problem with all benzodiazepenes is that if you take them regularly you very quickly develop a tolerance to them, so you have to keep on increasing the dose to get the same effect. I've been on diazepam for 3 years now - initially like you I took it to get rid of the awful anxiety and it was supposed to be a temporary measure while we found a long-term solution. But that didn't happen, so I carried on taking it and now, 3 years later, I'm on 10mg a day which has no effect whatsoever in easing the anxiety, but if I don't take it I'll get awful withdrawal symptoms. So it becomes a sort of trap, and long term use of these drugs can have a whole list of unpleasant side-effects like depression, anxiety, sleep problems, confusion etc. You won't find a doctor willing to prescribe them as anything other than a very short term measure.