My doctor put me on lisinopril last December, after taking it for 3 days, I was doubling over in pain and ended up in the emergency room with severe stomach cramps. After a CT scan, I was diagnosed with an infection in my small intestine. I just started taking lisinopril again yesterday thinking that the connection between my infection and the blood pressure medicine was just a coincidence - I am experiencing the same symptons! Need a different drug, don't you think?