There is also concern about the development of resistant bacteria and about the side effects of the medications. A minor side effect is that Pepto-bismol turns the tongue and bowel movements black. You should not take Pepto-bismol if you are allergic to aspirin, and you should stop this medication if ear ringing occurs. Note that the relatively large amount of Pepto-bismol used over a period of several weeks has not yet been studied for major side effects and is not a Food and Drug Administration approved regimen. Treatment of Traveler's Diarrhea Somewhat less controversial is treatment with antibiotics when symptoms occur.
Doxycycline antibiotics twice a day for five days is also effective.
Doxycycline, a type of tetracycline, can make you more sensitive to the sun, so wear a sunscreen. These antibiotic regimens do not treat amoebic dysentery. Discuss with your health practitioner the advantages and disadvantages of using these medications. If you are using these medications, discontinue if symptoms persist beyond 48 hours and do not use if you develop a high fever or blood in the stool. Avoid non-carbonated bottled fluids or ice drinks of uncertain quality.