What is barium sulfate?
Barium sulfate is in a group of drugs called contrast agents. Barium sulfate works by coating the inside of your esophagus, stomach, or intestines which allows them to be seen more clearly on a CT scan or other radiologic (x-ray) examination. Barium sulfate is used to help diagnose certain disorders of the esophagus, stomach, or intestines. Barium sulfate may also be used for other purposes not listed in this medication guide.