title: Benazepril-Induced Agranulocytosis: A Case Report and Review of the Literature.
abstract: BACKGROUND
  Angiotensin-converting enzyme inhibitors are widely used drugs, and in appropriately selected patients, serious side effects are infrequent. Commonly seen side effects include cough, rash, hyperkalemia, renal dysfunction, and angioedema. Historically, dose-related agranulocytosis has been associated with captopril. Benazepril, a relatively more potent angiotensin-converting enzyme inhibitor, is rarely associated with agranulocytosis.
  
  
  METHODS
  Here, we report a case of drug-induced agranulocytosis due to benazepril, with complete recovery of white blood cell count upon discontinuation of the drug. All tests for other causes of agranulocytosis were unremarkable. This report highlights a serious and rare side effect associated with benazepril.
  
  
  CONCLUSIONS
  Benazepril is a commonly employed anti-hypertensive medication, and we report an unusual condition associated with this medication in order to increase vigilance among caregivers. In such cases, prompt recognition and discontinuation of the causative drug can make the difference between a recovery and a fatal outcome associated with drug-induced agranulocytosis.
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Bronx Lebanon Hospital Center, Bronx, NY, USA.
authors.forename: Hafiz Rizwan Talib
authors.initials: HR
authors.lastname: Hashmi
authors.affiliation: Department of Medicine, Bronx Lebanon Hospital Center, Bronx, NY, USA.
authors.forename: Rami
authors.initials: R
authors.lastname: Jabbour
authors.affiliation: Department of Medicine, Bronx Lebanon Hospital Center, Bronx, NY, USA.
authors.forename: Zwi
authors.initials: Z
authors.lastname: Schreiber
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Bronx Lebanon Hospital Center, Bronx, NY, USA.
authors.forename: Misbahuddin
authors.initials: M
authors.lastname: Khaja
mesh_terms: D000380:Agranulocytosis / Q000139:chemically induced*; D000806:Angiotensin-Converting Enzyme Inhibitors / Q000009:adverse effects*; D001552:Benzazepines / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D000806:Angiotensin-Converting Enzyme Inhibitors; D001552:Benzazepines; C044946:benazepril