DUKORAL® is intended to help prevent diarrhea caused by heat-labile toxin-producing enterotoxigenic E. coli (LT-producing ETEC) and cholera in adults and children 2 years of age and older. It does not treat enterotoxigenic E. coli (ETEC)-diarrhea or cholera once it develops. Not everyone who gets vaccinated will be fully protected. Precautions to avoid contaminated food or water should be taken. Allergic reactions and side effects such as abdominal pain, diarrhea, fever, nausea and vomiting may occur.