Please talk to your Dr. before you take any herbs (St. Johns wort). There is alot of information out there promising alot of things regarding these remedies and while I am sure they have there place, it is never a good idea to take anything with prescription meds without checking with your Dr. I am on Buspar for anxiety and it is working very well and has cut my Xanax use in half (weening off). Side effects were minimal and lasted a short time, I have always had problems with side effects. It is controlling my anxiety so well now, that I do not have depression issues anymore. Maybe the anxiety was causing depression? Good luck finding the correct med dose. It is never easy.
Please discuss all your options with your physician and remember you can advocate for yourself but you are seeing your physician because they are the one with indepth knowledge.
I hope you feel better soon.