Taking Cephalosporin with alcohol usually has a reaction within 2 hours. Drinking alcohol and taking cephalosporin often causes the body to experience some uncomfortable reactions, which are relatively rapid and usually occur within 2 hours of taking cephalosporin after drinking alcohol. Alcohol components can occur with cephalosporin disulfiram-like reaction, will cause the body to appear facial redness, dizziness, nausea, as well as panic and shortness of breath and other phenomena. Those with obvious symptoms may also experience increased heart rate and difficulty breathing, and for those with a strong reaction, shock or even death may occur. It is recommended that if you are not aware of this common sense and take cephalosporin after drinking alcohol, please go to the hospital immediately. If you are going to drink alcohol, it is usually a relatively safe timeframe to drink after a week of taking Cephalosporin, which may be a relatively safe timeframe. Cephalosporin should be used as prescribed by your doctor.