Well, my Buhner's books are in with the sleeping baby, so I can't go grab them to check, but I did look over his site and didn't see either of those herbs mentioned for anxiety.
But, doing an online search, there is some indication that Sida can be helpful with anxiety according to this site:
www.realnatural.org/ancient-ayurveda-beats-clonazepam-in-clinical-trial-for-anxiety-disorder/Whatever has been helpful for you, congratulations on the anxiety decreasing!!