title: Pills in the colon.
mesh_terms: D000284:Administration, Oral; D000368:Aged; D002432:Cecum; D003106:Colon; D003113:Colonoscopy; D005547:Foreign Bodies / Q000175:diagnosis*; D006801:Humans; D007408:Intestinal Absorption; D008297:Male; D011342:Procainamide / Q000008:administration & dosage
chemical_list: D011342:Procainamide