I had been taking this for years and about three-four yrs ago they changed generic. I had horrible stomach and abdominal problems.Not diarrhea or constipation but pain swelling bloating and feeling a lump in ab. Went to cts, ultrasounds, 3 colonoscopies,endoscopy, pill camera,I went through 3 primary care doctors. Had emergency hosp.visits. Doctors.started getting to think I was crazy That made me depressed to the point I didn"t want to see anyone or go any where. Not one Dr. suggested it could be one of my meds. By accident over the Christmas holidays I ran out of my lisinopril hctz. within 3 days I felt normal again Swelling in ab stopped and most of pain.ever gonna get near that poison again.# months later Im doing a lot better I actually feel good .Its amazing I think it caused me a rare reaction called intestinal angioedema .That is basically hives on your insides. Could be dangerous if esophogeous is involved I lucked out.I did have wheezing and shortness in breathing .People Beware Its a dangerous drug.