I'm on 5mg of citalopram which seems to help with the anxiety/depression. I am clenching my teeth and I have some blurred vision too, which does suggest its doing something to my serotonin reuptake.

I was previously on 5mg of prozac which worked well. It all depends on the individual as to what dosage they can take.

Incidentally, in the past I was able to take 20mg of prozac with very few adverse effects. Its only in the last year or so that I seem to have become really sensitive to medication.