Inclusion Criteria:  Postpartum women at ≥ 18 years of age Postpartum diagnosis of persistent hypertension (2 measurements of Systolic BP ≥150 and/or diastolic BP ≥ 100 or systolic BP ≥140 and/or diastolic BP ≥ 90 for people with diabetes) requiring an oral medication based on the ACOG criteria or Hypertensive disorder of pregnancy diagnosed antepartum or intrapartum requiring blood pressure medication in the postpartum Chronic hypertension requiring blood pressure medication postpartum  Exclusion Criteria:  Urine output < 30 cc/h prior to screening for eligibility Creatinine > 1.4 during current admission End-stage renal disease Hypersensitivity to ACE inhibitors or sulfa drugs Idiopathic/hereditary angioedema Hyperkalemia (serum potassium >5 mEq/L) during current admission Pulmonary edema