Alcohol consumption during pregnancy may damage the development of the fetus, resulting in the most common preventable cause of neurodevelopmental disability in the world: Fetal Alcohol Spectrum Disorders (FASD). The present dissertation aims to discuss the effects of alcohol on the developing CNS through two articles. The first article elucidates the mechanisms and outcomes of the combined alcohol and cannabis exposure in the offspring through preclinical studies. Alcohol teratogenesis is more potent when administered with cannabis and has more negative effects on the fetus than alcohol alone. Recent data demonstrate the interaction of ethanol and cannabis with the Endocannabinoid system, which plays an important role in neurodevelopment and explains the morphological and behavioral changes seen in preclinical studies. The second article is a systematic review that investigates Brazilian research on FASD, focusing on the instruments used for the neuropsychological assessment of individuals with FASD. While developed countries have decades of research on FASD, in Brazil numerous factors slow down the progress of in this and other areas of research. Socioeconomic status, cultural, and geopolitical divergences are some of these factors, which hinder the development, adaptation, and validation of instruments used in the diagnosis and neuropsychological assessment of FASD. In addition, it is worth noting that the socioeconomic vulnerability of the Brazilian population is an important factor in the increase in the occurrence of more severe forms of FASD. The systematic review points to the need to validate neuropsychological tools for the diagnosis and cognitive assessment of individuals with FASD in Brazil, and the participation of a multidisciplinary team in the diagnosis of FASD.