Ampicillin is ampicillin capsules. Ampicillin capsules belong to the penicillin class of antibiotics, which generally do not have a disulfiram reaction, so drinking alcohol in general does not have much effect. At present, the main drugs that cause disulfiram reactions are cephalosporin antibiotics, such as cefoperazone and cefamandole. Other drugs include sulfonamides, metronidazole, tinidazole and other such drugs. Because these drugs all contain thiomethyl tetrazolium, and disulfiram has the same effect, can competitively inhibit the activity of formaldehyde dehydrogenase, resulting in the conversion of alcohol into formaldehyde can not be further decomposed, formaldehyde accumulation in the body cause symptoms of poisoning.