I am concerned about stomach pain that I just started having today when I started taking tolteridine for bladder issues. I am also taking clopidogrel,cilostazol,ezetimibe,enalipril, sildenafil, and rabeprazole. I have not had any stomach pain with these meds. But now I am when I started the tolteridine.. To relieve the pain I have taken a liquid antacid and after a few minutes the pain goes away. I think the culprit is the tolteridine. I plan on asking the dr. about this on Monday.