Travel to Developing Countries - Traveler's Diarrhea

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Preventive Drugs

The following drugs can reduce your chance of getting sick:

Pepto-Bismol. Taking two tablets of Pepto-Bismol four times a day before and during travel to developing countries can help prevent many cases of diarrhea. Pepto-Bismol should not be taken for more than 3 weeks. Both aspirin and Pepto-Bismol share the active ingredient salicylate, which can be harmful to children. Many medications interfere with salicylate, and people who are allergic to aspirin, pregnant women, and those with ulcers, other bleeding disorders, or gout, should not take Pepto-Bismol without consulting a doctor. Side effects of Pepto-Bismol include ringing in the ears and black stools and tongue.

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Prophylactic Antibiotics. Prophylactic antibiotics are those used to prevent diarrhea while traveling. They work well, but there are many reasons that argue against their routine use. Taking prophylactic antibiotics can trigger adverse drug reactions or development of infections with resistant strains. Taking prophylactic antibiotics also contributes to the global problem of bacterial resistance. Antibiotics are also NOT effective against parasites or viruses, but their use may give travelers an unwarranted sense of security. At this time, prophylactic antibiotics are not generally recommended unless the person is at increased risk for complications of TD. People at such risk include those with chronic bowel diseases, kidney disease, diabetes, or HIV.

Lactobacilli. Taking capsules that contain protective bacteria called lactobacilli (also called probiotics), may be helpful, although the Infectious Diseases Society of American believes that evidence is insufficient to recommend them. Some studies report that a genetically engineered strain called Lactobacillus rhamnosus strain GG may prevent and reduce severity of diarrhea. In fact, lactobacilli may be used for both prevention and treatment in children without any adverse effects. The capsules can be split open and put into beverages for small children.