When alcohol enters the human body, ethanol will go through an enzyme to produce acetaldehyde, which will then go through a series of enzymes to produce carbon dioxide and water. If the hands are swollen after drinking alcohol, one of the final reasons to consider may be because of allergies, or the body’s metabolism is not good enough to produce swelling. At this time, if it is simply because of allergies, it is recommended to drink some warm water to speed up the excretion of the body, so that the acetaldehyde or intermediate decomposition products produced can be quickly metabolized outside the body. If the swelling is due to the body, you can take diuretics, but in this case it is not recommended to take diuretics privately. If the swelling does not go away for a long time, go to the hospital, the nephrology department to find a doctor to confirm whether you can take diuretics.