As most episodes of Diarrhoea are caused by bacteria, for instance, eating contaminated food, they usually only last a few days and should go away without taking any medication.
If you have been diagnosed with diarrhoea, you may wish to consider taking an Antidiarrhoeal medicine to help stop the diarrhoea and shorten the duration of your diarrhoea. This type of medicine will help you return to any essential activities sooner or for instance if you’re about take a long haul flight.
You can buy antidiarrhoeal medicines over the counter from most pharmacies. Please ensure you read the patient information leaflet that comes with the medicine to find out if it is suitable for you and what dose you should take.
Ask your pharmacist for advice if you are unsure.