After hanging cephalosporin fluids and drinking alcohol the next day, patients need to be closely monitored for disulfiram-like reactions. A disulfiram-like reaction is a reaction between antibiotics such as cephalosporin and alcohol. Patients can cause a disulfiram-like reaction by drinking alcohol within a week before and after the application of cephalosporin. Patients will have serious reactions such as flushing, palpitations, chest tightness, shortness of breath, nausea, vomiting, hypotension, shock and arrhythmia, which may even be life-threatening. If a patient has already consumed alcohol after cephalexin application, close observation is recommended. Some patients may not have any symptoms, but it is recommended to drink a lot of water and urinate to promote alcohol excretion. If the patient has symptoms similar to the disulfiram-like reaction mentioned above, it is recommended to seek medical attention urgently and give symptomatic treatment such as infusion and application of anti-allergic drugs.