What should you know about travellers diarrhoea antibiotic treatment?

Travellers' diarrhoea can result from bacteria, viruses, or parasites, so an antibiotic cannot treat every cause. Many mild cases settle with careful hydration and simple food. Unnecessary antibiotics can cause side effects and may make future infections harder to treat. A healthcare professional may ask about fever, blood or mucus in the stool, vomiting, recent medicines, pregnancy, and where you travelled before deciding.

Replace lost fluid with frequent small drinks; oral rehydration solution can provide water and salts when diarrhoea is frequent. Eat small portions when you feel able, and wash your hands after using the toilet. Do not take leftover antibiotics or share someone else's prescription. If a clinician prescribes treatment, follow the instructions and mention allergies and other medicines. Anti-diarrhoeal medicine may not be suitable when there is fever or blood in the stool, so check first.

Seek prompt medical advice for blood or black stool, severe abdominal pain, repeated vomiting, confusion, fainting, very little urine, or signs of dehydration such as a dry mouth and marked dizziness. Get assessed if a high temperature accompanies diarrhoea, if symptoms are worsening, or if they continue after you return. Children, older adults, pregnant people, and anyone with a weakened immune system may need earlier advice.

Ask whether your symptoms suggest a bacterial infection, whether a stool test is useful, which fluids are appropriate, and what warning signs should change your plan. Tell the clinician about recent antibiotics, health conditions, allergies, and your travel itinerary.