Lactobacillus reuteri

Weakened immune system: There is some concern that lactobacillus from supplements that contain live bacteria might grow too well in people whose immune systems are weakened. This includes people with HIV/AIDS or people who have taken medicines to prevent rejection of a transplanted organ. Lactobacillus has caused disease (rarely) in people with weakened immune systems. To be on the safe side, if you have a weakened immune system, talk with your healthcare provider before taking lactobacillus. Short bowel syndrome: People with short bowel syndrome might be more likely than other people to develop lactobacillus infections. If you have this condition, talk with your healthcare provider before taking lactobacillus. Ulcerative colitis: People with ulcerative colitis that is severe enough to require hospitalization might be more likely than other people to develop lactobacillus infections. If you have this condition, talk with your healthcare provider before taking lactobacillus. Damaged heart valves: Lactobacillus can cause an infection in the inner lining of the heart chambers and heart valve, but this is extremely rare. However, people with damaged heart valves might be more likely than other people to develop this type of infection, especially if they take lactobacillus before dental or invasive stomach and intestinal procedures. People with damaged heart valves should stop taking probiotics before dental procedures or invasive stomach and intestinal procedures such as an endoscopy.