Hi Katkat. I'm so sorry to hear about
everything you've been going through. I've had similar anxiety symptoms from Lialda (which is the same as Asacol, except 1 Lialda = 3 Asacol). It's taken me a while to work my way up to being able to take 4 Lialda a day.
Have you tried Rowasa enemas? I just started about 2 weeks ago, in combination with the the Lialda. I take both at night so that I can hopefully sleep through the Lialda side effects. Since Rowasa typically isn't absorbed into the blood stream it may not cause anxiety for you.
Rowasa is really working for me - I'm slowly getting much better after having been flaring for almost a year now. I did have to give up coffee, and initally all caffeine, but I'm now able to drink tea that has low doses of caffeine and believe it or not you will get used to the lower kick in the morning. :)
I still can't do beer. I realize it's best to not drink at all while UC is flaring, but I find I can do white wine in moderation (2 glasses has been okay).
Hope this helps a little.