re: Anyone on Buspirone?
Long ago I tried Buspirone (Buspar) up to 15 Mg 3 Xs/day over a 3-year period. It's touted as a safe option and it is, but still, for me and, I gather, from some others here and in RL, that it's often ineffective.
You're on a very low dose to start, and one week's time really isn't a fair trial. Three weeks and maybe a higher dosage may give you a more accurate picture. It caused a big weight gain for me, but this could be an uncommon side effect of the medicine and could depend on the dosage.
I see that it's indicated for GAD, and I did have that. I also had SAD at the time, and although I'm not a doc, I'm not sure why it wouldn't have potential for cases of chronic anxiety stemming from social phobia and anticipatory anxiety relating to that.
In my opinion it's worth a try, and I hope it works for you in time. For me, though, all I can say is that it was ineffective and that the docs should never have prescribed it for me over such a long period.