Many people will experience dizziness after drinking alcohol for the following reasons: 1. The first and most critical aspect is caused by the effect of the components in alcohol on the central nervous system, for example, ethanol in alcohol will have a stimulating effect on the patient’s central nervous system, which will cause the patient to have dizziness. 2. After drinking alcohol, it will cause the patient’s sympathetic nerves to be in an excited state, which will easily cause Some elderly people experience dizziness after drinking alcohol, which is related to alcohol-induced cerebral vascular spasms, which can cause insufficient blood supply to the brain, and can lead to dizziness. But most of all, dizziness after drinking alcohol is also related to the paralysis and stimulation excitement of the central nervous system by alcohol.