Diarrhoea (acute)

2mg loperamide (Imodium, OTC) initially, then 2mg after each loose stool (max 16mg/day). Stay hydrated — oral rehydration salts (ORS) or water with a pinch of salt and sugar. For traveller’s diarrhoea: loperamide to get you through the flight, but if there’s fever or blood in stool, see a doctor — you may need antibiotics (azithromycin or ciprofloxacin, prescription).