According to health professionals at the University of Arizona, the only thing that makes blood alcohol concentration go down is time. For a woman who weighs 120 pounds and has one drink, it will take approximately two and a half hours for her body to process so that her BAC is back to zero.
From coffee to sucking on pennies, there are numerous myths about what will lower a person's blood alcohol concentration (BAC). These myths are just that and are not based on fact. After having one or more alcoholic drinks, the only thing that will eradicate the alcohol from an individual's system is time.
For instance, for a man who weighs 160 pounds and has two drinks, it will take approximately two hours for his body to process the alcohol so that his BAC is back to zero.