Alcohol (ethanol or ethyl alcohol) is the ingredient found in beer, wine and spirits that causes drunkenness. Alcohol is classified as a ‘sedative hypnotic’ drug which means that differentiating amounts will suppress the central nervous system. When alcohol is used in a high dose scenario, more health risks are common such as drowsiness, respiratory problems, liver issues, and even coma or death. At low dosage, alcohol can be used as a stimulant as it can cause feelings of euphoria or talkativeness.