It takes most people about 12 hours to drink four pairs of white wine before they can drive. But there are relatively large individual differences. Generally speaking, the human body’s ability to metabolize alcohol is 15 to 20 milliliters per hour. Four taels of white wine at 50 degrees, for example, means that the alcohol content is 100 milliliters, which means that a normal person needs five to seven hours to fully metabolize it. At the same time to consider the gastric emptying time, mixed food gastric emptying time is four hours, that is, four hours after eating, food can all enter the small intestine, the beginning of alcohol absorption. So after drinking, to the final alcohol metabolism is completed, considering the gastric emptying time, four taels of white wine need about 12 hours. But the individual differences between people are very big, for example, some people with abnormal liver function, the metabolism time may take longer. There is also a part of the people liver enzyme deficiency, metabolism of alcohol ability is poor, so the corresponding extension of time will be comparable. Therefore, it is actually difficult to accurately determine how long it takes to drive after drinking four taels of white wine. Need laboratory examination of blood alcohol concentration to finalize. Drinking is harmful to health, drinking and driving is to affect their own lives and the lives of others, please try to stay away from alcohol.