I'm new to this forum and was wondering if someone might be able to tell me if abdominal pain, constipation and gas are side effects of PPI's. My neighbor is a doctor and prescribed me prevacid, I took them for 2 weeks, and began to notice these problems. I told him this and his response was "Prevacid does not have those side efffects." but when I search "Prevacid side effects" these symptoms show up on every page. ANy direction woudl be appreciated.