The purpose of the present invention is to provide a diarrhea-preventing nutritional composition that enables the ingestion or administration of nutritional components while effectively preventing diarrhea and that can maintain a stable viscosity even when stored in liquid form. A nutritional composition, in which lipid, carbohydrate, and protein are blended with pectin selected to have a degree of esterification of 10%-30%, a degree of amidation of 0%-25%, and a free acidity of at 64%-85%, allows nutritional components to be ingested or administered while effectively preventing diarrhea, and allows a stable viscosity to be maintained even when stored in liquid form.本發明之目的在於提供一種防止腹瀉用營養組成物,其可有效防止腹瀉同時攝取或投予營養成分,且即便以液狀來保管仍可穩定維持黏度。 從果膠之中選擇出酯化度為10~30%、醯胺化度為0~25%且遊離酸度為64%以上並小於85%者,將所選果膠與脂質、碳水化合物及蛋白質一起摻合而成之營養組成物,可有效防止腹瀉同時攝取或投予營養成分,進而即便以液狀來保管仍可穩定維持黏度。