Inclusion Criteria:  Presentation with a new diagnosis of peripartum cardiomyopathy Post-delivery and within the first 5 months post-partum. Clinical assessment of an LVEF < or =0.35 within 2 weeks of randomization Age > or = 18.  Exclusion Criteria:  Previous diagnosis of cardiomyopathy, valvular disease or congenital heart disease (with the exception of women with a history of peripartum cardiomyopathy with complete recovery and a documented LVEF > 0.55 prior to or in early pregnancy) Refractory hypertension (Systolic >160 or Diastolic > 95) either at the time of enrollment or at the time of the qualifying LVEF. Postpartum women currently breastfeeding and planning to continue. Evidence of coronary artery disease (>50% stenosis of major epicardial vessel or positive non-invasive stress test) Previous cardiac transplant Current durable LVAD support Currently requiring support with extracorporeal membrane oxygenation (ECMO) Current history of alcohol or drug abuse Chemotherapy or chest radiation within 5 years of enrollment Evidence of ongoing bacterial septicemia Medical, social or psychiatric condition which limit the ability to comply with follow-up.