Buspar just being for drug addicts is BS...
One of my pdocs put me on it to see if it was strong enough to control my anxiety before they decided to put me on Klonopin. She discontinued it when I went on the Klonopin tho.

It's possible that it's just the Buspar that's helping. Antidepressants can lower anxiety too, but many of them need time to build up in your system. I don't know if that's the case with Viibryd or not. You may want to ask your pdoc about that.

It may be worthwhile to see what the full effect of the drug may be if you aren't experiencing side effects.