I'm so sorry you are having such problems with anxiety! That is something I have suffered with for years too. It was much worse after the stressful event was over, but I seemed to be able to handle any event at the time. It's all a part of my PTSD and one that I don't like at all!!!
Anyway, Xanax comes in a controlled release (generic) too and workes quite well for me. Most people don't even realize that you can get a long acting version of xanax. My psych gave it to me years ago and I don't go a day without it. Thank God the anxiety attacks have pretty much gone since I've been on it.
I wish you all the best!
TLIF L5-S1/failed, Pituatary disorder w/HGH deficiency, Fibro, Failed Bladder Surgery & Nissen, GERD, OCPD, GAD, MDD, CFS, TMJ, Migraines, HBP, Idiopatic Reactive Hypoglycemia w/Diabetic reaction to HGH, Bi-lateral CTS (surgery related trigger finger), Edema, Tarsal Tunnel Syndrome, Peripheral Neuropathy, Plantar Fascitis, Tibular Tendionitis, Adult Onset Flat Feet, Vision Issues & much more.....