Ampicillin sodium


What is Ampicillin sodium?

Common Brand(s): Omnipen-N

Ampicillin is used to treat a wide variety of bacterial infections. It is a penicillin-type antibiotic. It works by stopping the growth of bacteria.

This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu). Using any antibiotic when it is not needed can cause it to not work for future infections.


  • typhoid fever
  • gastroenteritis due to Shigella
  • inhaled anthrax
  • gastrointestinal anthrax
  • anthrax septicemia
  • meningitis due to anthrax
  • listeriosis
  • Listeria meningitis
  • Listeria endocarditis
  • tonsillitis due to Streptococcus pyogenes
  • meningococcal meningitis
  • streptococcal septicemia
  • Staphylococcus aureus septicemia
  • E. coli septicemia
  • Proteus septicemia
  • Enterococcus septicemia
  • Salmonella septicemia
  • bacterial sepsis
  • Campylobacter fetus infection
  • H. influenzae meningitis
  • pneumococcal meningitis
  • Escherichia coli meningitis
  • bacterial endocarditis
  • prevention of bacterial endocarditis
  • streptococcal endocarditis
  • enterococcal endocarditis
  • Haemophilus endocarditis
  • acute bacterial sinusitis
  • Haemophilus influenzae pneumonia
  • streptococcal pneumonia
  • staphylococcal pneumonia
  • bacterial pneumonia
  • chronic bronchitis with bacterial exacerbation
  • infection prevention for GI surgery
  • necrotizing enterocolitis
  • enterocolitis
  • biliary tract infection
  • genitourinary tract infections
  • vaginal hysterectomy infection prevention
  • skin and skin structure infection
  • cesarean section infection prevention
  • granulomatosis infantiseptica
  • gastroenteritis due to Salmonella
  • Listeria monocytogenes septicemia
  • cutaneous listeriosis
  • acute epiglottitis
  • Listeria septic arthritis
  • Listeria osteomyelitis
  • Yersinia pseudotuberculosis infection
  • prevention of neonatal group B streptococcal infection
  • neonatal group B streptococcal septicemia
  • neonatal meningitis
  • neonatal pneumonia
  • sepsis of newborn
  • acute streptococcal epiglottitis
  • pediatric fever without a source
  • bacterial meningitis
  • bacterial urinary tract infection

Usage Instructions

This medication is given by injection into a vein (intravenously-IV) or into a muscle (intramuscularly-IM) by a healthcare professional as directed by your doctor. If you are giving the injection yourself, learn all preparation and usage instructions from your healthcare professional. Follow all instructions for proper mixing and dilution with the correct IV fluids. Direct injections into the vein should be done slowly (over at least 10-15 minutes) to avoid the risk of seizures. If you have questions regarding the use of this medication, consult your pharmacist.

Before using this product, check it visually for particles or discoloration. If either is present, do not use this product.

Learn how to store and discard needles and medical supplies safely. Consult your pharmacist for more details.

The dosage is based on your medical condition, response to therapy, and weight.

For the best effect, use this antibiotic at evenly spaced times. To help you remember, use this medication at the same time(s) every day.

Continue to use this medication until the full-prescribed amount is finished even if symptoms disappear after a few days. Stopping the medication too early may allow bacteria to continue to grow, which may result in a relapse of the infection.

Inform your doctor if your condition persists or worsens.


This medication must be stored properly. Review storage instructions with your pharmacist. Store mixed intravenous ampicillin bags in the refrigerator between 36-46 degrees F (2-8 degrees C). Let a refrigerated bag sit at room temperature at least one hour before using. Check the expiration date before using. Store vials at room temperature (59-86 degrees F or 15-30 degrees C) away from light and moisture. Do not store in the bathroom. Keep all medicines away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.