Introduction: The adoption of the role as a mainly family caregiver implies commitment and adapting their way of life in order to ensure the well-being of the caregiver, which implies a series of changes at a social, personal, work and family level.Objective: To determine the level of overload of caregivers of patients with heart failure.Material and method: A descriptive cross-sectional design was used. With a sample size of 64 family caregivers from a fourth level health institution, during the first half of 2019.