You should not drink beer after taking amoxicillin. Amoxicillin is an antibiotic, a broad-spectrum semi-synthetic penicillin that acts as a bactericidal agent by inhibiting cell wall synthesis in bacteria. Amoxicillin, unlike cephalosporins, may have a disulfiram reaction with ethanol, resulting in chest tightness, laryngeal edema, dyspnea, increased heart rate, decreased blood pressure and even anaphylactic shock. The main component of beer is ethanol, amoxicillin into the body need to liver involved in the metabolism, and ethanol will inhibit the activity of liver enzymes, so that the drug in the body aggregation, amoxicillin blood concentration increased, increasing the risk of amoxicillin adverse reactions. If you drink beer after eating amoxicillin have not adapted to timely medical treatment, under the guidance of a professional physician, do not blindly deal with their own, resulting in adverse consequences.