There is not a significant amount of research in humans to identify the effects of consuming alcohol alongside CBD. 

The research that has been done (mostly in animals, such as mice) has identified that CBD may protect against alcohol induced cell damage while reducing blood alcohol concentrations (“What Happens If You Mix CBD and Alcohol”). This is not to say that taking CBD makes consuming a higher amount of alcohol safe, both of these substances should be consumed in moderation. Both CBD and alcohol have a sedation effect on the body and when taken together, these substances may amplify each other (“What Happens If You Mix CBD and Alcohol”). This amplification could make the consumer significantly impaired.