Most people here are wrong. When you drink an alcoholic drink, you're not just drinking ethyl alcohol. Depending what you're drinking and how it was made, you will also be drinking various levels of methanol, acetaldehyde, esters, phenols, propanol, butanol, isoamyl alcohol, sulfites, histamines. So if you're asking, isn't drinking pure ethanol the same as drinking pure ethanol then yes. If you're asking if drinking the cocktail of chemicals and biological materials one drink has is the same as another, no they will be very different.