http://www.medications.com/se/Butalbital Recent side effects for Butalbital Wed, 14 Apr 2004 07:56:09 -0400 http://www.medications.com/effect/view/4377 My dr. prescribed butalbital (fioricet) for my headaches and he is aware of my existing conditions (sensitivity to aspirin as well as mild ulcerative colitis. I have experienced severe stomach pain especially on the left side and have stopped taking this http://www.medications.com/effect/view/4377