There are many hazards of drinking after taking medication: First, usually drinking after taking anti-inflammatory drugs is the most harmful, anti-inflammatory drugs such as β-lactams usually react with alcohol in a disulfiram-like reaction, which can cause allergic symptoms in mild cases, such as severe cases can cause anaphylaxis, and even life-threatening. Second, for example, gastric mucosal protective agents, such as proton pump inhibitors. Such drugs such as alcohol will cause excessive secretion of gastric acid, will lose the protection of the gastric mucosa and barrier function, the gastric mucosa will also play a certain side effect and irritation effect. The third category of drugs, such as blood circulation and blood stasis, improve the blood supply to the heart muscle and cerebrovascular drugs, after taking such drugs, drinking alcohol will greatly reduce the positive inotropic effect of drugs, but will increase the side effects of drugs and reduce the efficacy and pharmacokinetics of drugs. Therefore, drinking alcohol after taking medication is very harmful.