Overall, 1,8-cineole was found to be the major compound present in EO, and ellagic acid, quercetin, and rutin are the main components of phenolic extracts from E. globulus, which were demonstrated to efficiently prevent or attenuate several AD-related hallmarks, namely amyloid and tau pathologies, oxidative stress and neuroinflammation, neurotransmission deficits, and also memory and learning impairments. This evidence concerns the gene MAPT and Alzheimer disease.