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Melanotic stools can be caused by medication, including Pepto-Bismol. Blueberries can sometimes cause melanotic stools. Treatment for melanotic stools depends on the cause. Melanotic stools can be indicative of a disorder or injury of the digestive system.
Discussion. Melanosis coli is an abnormal brown or black pigmentation of the colonic mucosa caused by the presence of lipofuscin in macrophage within the lamina propria [1] .This dark pigment is produced by the breakdown of apoptotic colonic epithelial cells [4] .onclusion. As reported in the rest of gastro-intestinal tract, melanosis coli can be observed in patient without history of anthraquinones use. Other causes, such as ingestion of osmotic laxatives or chronic constipation can be involved.