I smoked some nice afghan last summer, and i found that whilst it got my nicely high, it also seemed to give me a burst of energy. It sounds kind of strange, but with that and the combination of sun, it made me stand up quite briskly and start running, it felt great.

I don't know if that qualifies it as a good treatment for panic attacks, I think in any case you were probably referring to the other kind of afghan anyway, not the mountain charas.