Find patient medical information for Ampicillin on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Ampicillin is a penicillin beta-lactam antibiotic used in the treatment of bacterial infections caused by susceptible, usually gram-positive, organisms. The name penicillin can either refer to several variants of penicillin available, or to the group of antibiotics derived from the penicillins. Ampicillin is a type of penicillin antibiotic that treats some bacterial infections. The brand name of this medication is Principen. Ampicillin capsules are indicated in the treatment of infections caused by susceptible strains of the designated organisms listed below: Bacteriology studies to determine the causative organisms and their susceptibility to ampicillin capsules should be performed. Therapy may be instituted prior to the results of susceptibility testing. Ampicillin is a prescription penicillin-type antibiotic used to treat many different types of infections caused by bacteria, such as ear infections, bladder infections, pneumonia, gonorrhea, and E. coli or salmonella infection. Learn about side effects, drug interactions, dosages, warnings, and more. Ampicillin injection is used to treat certain infections that are caused by bacteria such as meningitis (infection of the thin layers that cover and protect the brain and spinal cord) and lung, blood, heart, urinary tract, and gastrointestinal tract (includes the mouth, stomach, or intestines) infections. Ampicillin injection is in a class of medications called penicillins. It works by killing. Detailed Ampicillin dosage information for adults and children. Includes dosages for Bacterial Infection, Urinary Tract Infection, Sinusitis and more; plus renal, liver and dialysis adjustments. Ampicillin: side effects, dosage, interactions, FAQs, reviews. Used for: bacteremia, bacterial endocarditis prevention, bacterial infection, bronchitis, endocarditis. Ampicillin is an antibiotic used to treat infections caused by H. influenzae, N. gonorrhoea, E. coli, salmonella, shigella, streptococci, and certain strains of. Ampicillin is an antibiotic belonging to the aminopenicillin class of the penicillin family. The drug is used to prevent and treat several bacterial infections, such as respiratory tract infections, urinary tract infections, meningitis, salmonellosis, and endocarditis. [6].