The present invention provides a method for the prevention of the incidence of and/or a reduction in the duration of acute diarrhoea, particularly in travellers, said method comprising orally administering an oligosaccharide composition, in particular a non-digestible oligosaccharide, to a mammal.本發明提供一種用於預防急性腹瀉,特別為旅人急性腹瀉之發生及/或縮短發病時間之方法,該方法包含對哺乳動物經口投予寡醣組成物,特別為不可消化的寡醣。