The DIG-DICA trial is a randomized, controlled, open-label, single-center study designed to evaluate whether adding low-dose digoxin to optimal medical therapy after an episode of acute decompensated heart failure improves patients' clinical status and quality of life. The study enrolls adults with heart failure with reduced ejection fraction (HFrEF) who have recently stabilized after hospitalization or urgent care for decompensation. The primary aim is to determine whether digoxin increases the proportion of patients who are "Alive and Well" at 180 days-defined by achieving a Kansas City Cardiomyopathy Questionnaire (KCCQ-12) score 75. The trial also explores effects on symptoms, functional capacity, biomarkers, renal function, and major cardiovascular events. The goal is to clarify whether modern low-dose digoxin provides meaningful clinical benefit in contemporary heart failure management.