Can consuming coffee make a person completely sober?

The notion that consuming coffee can make a person completely sober is a misconception. While caffeine, the active ingredient in coffee, can increase alertness and temporarily reduce the feeling of drowsiness, it does not eliminate alcohol from the system or cure intoxication. The only factor that can genuinely lower blood alcohol concentration is time, as the body processes alcohol at a consistent rate, which varies from person to person but averages about one standard drink per hour. Therefore, while someone might feel more awake or alert after drinking coffee, their level of intoxication, impairment, or blood alcohol concentration remains unchanged until their body has had sufficient time to metabolize the alcohol. This is why understanding the effects of alcohol and the limits of home remedies like coffee is crucial for responsible drinking.