year old male from the UK is in Mombassa in Kenya on a business trip.
4 days into the trip he develops diarrhoea. He has 4-5 loose motions with
mucous and no blood and has cramp like abdominal pain.
examination he is not dehydrated , pulse 90 beats per minute regular , heart
sounds normal , lungs clear , abdomen soft no lumps no tender areas and bowel
sounds are normal .
this patient which one of the following would reduce the duration of his