Nausea after drinking but not vomiting is caused by the stimulation of the gastric mucosa while the stomach contents have been emptied. It is best to avoid heavy drinking if you want to keep your stomach and intestines healthy, otherwise alcohol will dissolve the mucus secreted from the gastric mucosa, thus causing irritation to the stomach lining to induce the onset of stomach diseases. After drinking alcohol, the protective barrier of the gastric mucosa has been damaged, so alcohol will cause stimulation to the stomach wall, and the stomach wall will contract in spasm due to the increase in pressure in the stomach, so nausea and vomiting will occur. However, in some people, the stomach has been emptied of food, and since there is no food present, vomiting will not occur when vomiting. People who have post-drinking nausea can drink honey water or sugar water, which not only can achieve the purpose of relieving alcohol, but also can protect the gastric mucosa and reduce the symptoms of nausea and vomiting.