Toprol-XL Side Effects: Started Toprol XL 75 mg in December 2007. I had been having gast http://www.medications.com/effect/view/31765 Started Toprol XL 75 mg in December 2007. I had been having gastrointestinal issues and after much searching, I decreased the Toprol to 50 mg. and the symptoms went away. Before I figured it out, I had difficulty having bowel movements and unirating. A MALE, 50 YRS OLD WITH AFIB AND TAKE TOPROL DAILY. I CUT MY MEDS Sun, 06 Jul 2008 10:59:38 -0400 http://www.medications.com/effect/view/31765?item=9823 A MALE, 50 YRS OLD WITH AFIB AND TAKE TOPROL DAILY. I CUT MY MEDS IN HALF, LITERALLY. I BREAK THEM AND TAKE THEM. THIS IS NOT GOOD AS THEY ARE DESIGNED FOR TIME RELEASE AND BREAKING THEM DESTROYS THAT FUNCTION. BUT I DO NOT KNOW HOW ELSE TO CUT BACK. ANY I http://www.medications.com/effect/view/31765?item=9823