1. Rice wine cannot be drunk after being stored for 20 years, because long storage time will cause the nutritional value and taste of rice wine to decrease. In addition, if the rice wine has deteriorated, it will cause the drinker to experience gastrointestinal discomfort symptoms such as abdominal pain, bloating, vomiting, and even poisoning, which is harmful to the human body.

2. After the rice wine has been stored for twenty years, you need to pay attention to determine whether it has deteriorated. You can observe the color, smell, whether the rice wine is sticky and whether there is floc, etc. If the rice wine has turned dark red or black, has a sour or pungent smell, or is sticky or flocculated, it means that the rice wine has deteriorated and should not be consumed. At this time, bacteria have already grown in the rice wine, which may cause gastrointestinal discomfort to the human body after drinking.

3. Rice wine is brewed from a variety of grains and is rich in nutrients such as amino acids, vitamins, and organic matter. Drinking it in moderation can promote digestion, relax muscles, activate blood circulation, and increase appetite. However, for some people, such as those with liver disease, they need to avoid drinking it because rice wine contains high alcohol, which may aggravate liver function damage after drinking it. Since alcohol easily reacts with the ingredients in some anti-diabetic drugs, such as metformin, people with diabetes who are taking anti-diabetic drugs should also avoid drinking it. In addition, because rice wine is irritating, people with poor gastrointestinal function should avoid drinking it to prevent adverse reactions such as gastric bleeding.