Ethanol, also referred to as alcohol or ethyl alcohol, is the active ingredient in alcoholic beverages, such as beer, wine, and spirits. It is a depressant; therefore, it slows down the activity of the brain and spinal cord. Ethanol is metabolized in the liver and can have various effects on the body, including impairing judgment, coordination, and reaction time. It can also cause changes in mood and behavior and increase the risk of accidents, injury, and death. Chronic heavy drinking can lead to alcohol use disorder, characterized by compulsive alcohol use, impaired control over alcohol consumption, and continued use despite negative consequences. Worldwide, alcohol is one of the most used and abused substances and is a major cause of preventable illness and death.