thanks for that, I also believe this to be the case. Last time I saw my doctor, we were discussing the colitis/chrons and I asked for anti-depressants and she replied 'lets deal with one problem at a time'. Dont think she understood that I wanted them to deal with the same problem!
I am going to ask her next time to try me on the one you suggest. They are refusing me B12 injections so I dont hold out much hope at the moment but I can try.