First of all, let’s analyze how alcohol is decomposed in the human body. After alcohol enters the body through the mouth, it is firstly decomposed into acetaldehyde by enzymes, acetaldehyde is formed into acetic acid by acetaldehyde dehydrogenase, and acetic acid is formed into carbon dioxide and water through the movement of the whole body or dispersed throughout the body, which is discharged out of the body through breathing and urination, which is the whole process. If you have a hangover, the first solution is to hydrate your body. The main reason for a hangover is that the body is in a state of extreme dehydration due to excessive drinking, and the acetaldehyde in the body is not completely cleared at this time. It is best to drink some light salt water to reduce the stimulation of the stomach. The second point is to consume enough amino acids and vitamins to improve the function of the liver. The reason for the hangover is that acetaldehyde is not completely metabolized, so this time you should improve the function of the liver to accelerate the decomposition of acetaldehyde, you can eat more fish, protein-based ingredients, and you can also eat some rice and chicken breast meat, to speed up the metabolism of acetaldehyde. If you have stomach pain, you can take some stomach medicine to inhibit the secretion of excessive stomach acid, such as omeprazole, which can inhibit the secretion of stomach acid. If the headache occurs, you can go to some water alone, if not effective, at the same time can drink tea and coffee. These two can constrict blood vessels to reduce the headache caused by acetaldehyde caused by vasodilation. If it is not effective, you can take headache medicine, which may stimulate the stomach, and try to reduce the use of painkillers.