“…Medications with anticholinergic activity, narcotics, psychotropics (phenothiazines, tricyclic antidepressants), antidiarrheals (loperamide, diphenoxylate/atropine), and vinca alkaloids have all been reported to cause either ileus or intestinal pseudo-obstruction. 3 Although calcium-channel blockers do not commonly cause hypomotility, they have also been reported to cause intestinal pseudo-obstruction. 4–10 We describe a case of intestinal pseudo-obstruction in a neutropenic patient who received diltiazem for atrial fibrillation.…”