Lactose Intolerance, Adult Type, also known as disaccharide intolerance iii, is related to lactase deficiency, congenital and lactose intolerance, and has symptoms including abdominal pain, diarrhea and flatulence. An important gene associated with Lactose Intolerance, Adult Type is MCM6 (Minichromosome Maintenance Complex Component 6). The drugs Caseins and Sorbitol have been mentioned in the context of this disorder. Affiliated tissues include small intestine and colon, and related phenotypes are abdominal pain and diarrhea