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Antibiotics used in diarrhoea

Authoring team

Simple gastroenteritis:

  • diarrhoea in the UK is often caused by viral infections
  • antibiotics are unnecessary in simple gastroenteritis even when a bacterial cause is suspected because the complaint will usually resolve quickly without them Systemic bacterial infection:
  • Campylobacter enteritis: Erythromycin or Ciprofloxacin
  • Salmonellosis & shigellosis:Trimethoprim or Ciprofloxacin Antibiotics may prolong rather than shorten the time taken to control diarrhoea by causing masked bacterial diarrhoea, carrier states, or pseudomembranous colitis Travellers' diarrhoea: prophylactic antibiotics are not recommended. Lactobacillus preparations are valueless. Antibiotic associated/pseudomembranous colitis(C.difficile):
  • vancomycin or metronidazole

ref: Current BNF


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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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