Remeron is actually an anti-depressant, and your doctor was right in that it doesn't have too many anti-anxiety
qualities. In SOME people, it may worsen anxiety
a bit. Have you tried any other medsto help treat your panic attacks? Like an SSRI antidepressant med, like Zoloft?
If the med is working, then why are you fearful? Is it not working as well for the insomnia? Are you just concerned that you will require many dosage adjustments?