Spontaneous reports by health professionals generate the signals in pharmacovigilance. However, the passive method has limitations and the most important of them are the underreporting and the poor quality of data, hindering the causality assessment of adverse drug events (ADE). Therefore, the present study aimed to validate an educational intervention (EI) in pharmacovigilance for hospital health professionals, in order to analyze the impact on the knowledge, skill and attitude in ADE reporting.