Embodiments of the disclosure include particular amyloglucosidase (AMG) compositions formulated as a nutriceutical or medicinal food, for example. The AMG compositions are formulated at a specific dosage and/or are lacking in one or more toxins or have substantially reduced levels of toxin, such as deoxynivalenol (vomit toxin). The AMG compositions are provided to individuals in need thereof, such as an individual with or at risk for congenital sucrase isomaltase syndrome, functional bowel disorders, small bowel bacterial overgrowth, protein-calorie malnutrition (marasmus), radiochemotherapy-induced mucositis and/or short-gut syndrome.