how quickly does a unit of alcohol leave your system
Adding up your units. If you drink a large (250ml) glass of wine, your body takes about three hours to break down the alcohol. If you drink one pint of beer, your body takes about two hours to break it down.One pint of strong lager is equivalent to three units, so this will take longer.f you have a few drinks during a night out, it can take many hours for the alcohol to leave your body. The alcohol could still be in your blood the next day. This means that if you drive the day after an evening of drinking, you could be over the legal alcohol limit.