Bloodshot eyes after drinking alcohol are mainly due to the stimulating effect of alcohol on blood vessels, causing them to dilate, and the main solution is to stop drinking. After drinking alcohol, it will be absorbed into the bloodstream, and part of the alcohol will be metabolized by the liver or kidneys, and then excreted from the body. The other part of the alcohol that is not metabolized in time remains in the body and has an effect on some tissues of the body. Alcohol stimulates blood vessels, causing them to dilate and become congested, which is reflected in the eyes as redness and congestion. If the blood vessels are less elastic, such as those containing atheromatous plaques, they may rupture due to the stimulation, leading to hemorrhagic disorders. The best solution for eye congestion caused by alcohol consumption is to stop drinking to avoid accidents. Seek medical attention if you feel unwell.