Ampicillin is also known as ampicillin. Ampicillin is an antibiotic of the beta-lactam class, which is used to treat various infections. For example, respiratory tract infections, urinary system infections, digestive tract infections or skin and soft tissue infections, and ear, nose and throat infections. The medicine is available in doses of 125 mg or 250 mg. You cannot add drugs at random for fear of causing adverse reactions. Allergic reactions are the same as penicillin, such as skin rash or anaphylaxis. Gastrointestinal reactions, such as nausea and vomiting, may also occur. There are also blood system disorders, such as leukocytopenia or thrombocytopenia.