Beta-blockers suppress the autonomic symptoms of anxiety, including gastrointestinal disturbance, palpitations and tremor, but have no effect on the psychological symptoms such as worry, tension and fear.

This is not necessarily true with Toprol XL. It can cause gastrointestinal disturbance. In the 9 months that I have been on it, I can hear my stomach gurgle more often & have lost 9 pounds in the process. It is listed as one of the side-effects, but I have seen many others post that it causes stomach problems+. I am on Lotrel 5/20 as well, so I wonder if the combo is too much for my system to take. My doc. says that the side-effects are in my head.... yeah right.