Anne, getting someone on the right anti depressant is not always easy and any psychiatrist knows trial and error is involved. I look at this way, if he had an ear infection and was on an antibiotic and it didn't work,it would be silly to keep prescribing the same antibiotic. I don't know any MD that would do that.
It's the same with anti depressants. I have clients that have had to try three or more types and/or combos before getting the ones right for them.

I'd be more than happy to try to answer any questions I can about various SSRI's or other anti depressants. let me know if I can help.
I'm stepping off my soapbox now but it just makes me so pissed to see someone not being helped that certainly can use some assistance to get over this hump!!!