The problem of the present invention is to provide a nutritional composition with which a health care provider or a patient can easily and precisely perform strict water content management, which is difficult with conventional nutritional compositions. The present invention relates to a nutritional composition for use in a subject requiring water content management, wherein the composition ratio of the caloric ingredients, fortifying ingredients, and water in the nutritional composition is such that the composition does not contain excess water in relationship to the caloric and fortifying ingredients required by a subject. The present invention also relates to a nutritional composition product in packet form containing the nutritional composition and a method for producing the nutritional composition.