The FDA says ulcer drugs such as the blockbuster Nexium and others could increase the risk of something known as c-difficile associated diarrhea or CDAD. It is a bacteria naturally present in the gut and can cause colitis and other intestinal conditions.
The FDA says patients who develop this after taking these drugs known as proton pump inhibitors should be checked for CDAD.
These drugs are widely used for treating ulcers, acid reflux and other conditions. They include other widely used drugs such as Prevacid and Prilosec.