Background In dementia it is necessary that a family member become an informal caregiver. This labour has social, physical and emotional repercussions on the caregiver's health. The objective was to assesses the impact of the INFOSA-DEM intervention on burden and emotional well-being among caregivers of people with dementia, evaluating the effects at 3 and 6 months. Method We adopted an experimental, non-randomised design with an intervention group and a control group.