As a nutritional composition and a composition for the prophylaxis or improvement of lower gastrointestinal function, which improve lower gastrointestinal function and are effective for the prophylaxis or improvement of diarrhea, gastroesophageal reflux or misswallowing caused by administration of a liquid nutritional supplement, the present invention provides a nutritional composition and a composition for the prophylaxis or improvement of lower gastrointestinal function, which comprise at least one kind selected from glutamic acid, 5-nucleotide and a salt thereof, wherein, when glutamic acid alone is contained, the content thereof on administration is 0.0013 - 1.3 w/v% as free glutamic acid.
