I have recently been diagnosed with CTE, PTSD, Bi-Polar and a very severe anxiety problem brought on by traumatic brain injury. I have been given 2mg IR Xanax for a couple weeks and then decided I don't want to have to take as many pills a day as I was. I have a problem taking Tylenol usually so this has been a dramatic shift in my lifestyle. However, I do not seem to be getting the same relief from the XR as I was the IR. Does anybody know why this is?