Antimicrobials
Ampicillin

Ampicillin

Low
N/A

Dosing

General Information

Ampicillin is commonly used as pathogen directed therapy for intravascular, intra-abdominal and urinary infections secondary to certain Enterococcus spp.

Ampicillin is used as empiric therapy for bacterial meningitis if risk factors for Listeria monocytogenes are present.

Allergic reactions, rash Cytopenias Clostridium difficile associated diarrhea

Allopurinol - increased risk of rash

Antimicrobial class: Aminopenicillin

Pregnancy category: B

Average serum half life: 1 hour

Biliary penetration: Therapeutic

CSF penetration: Therapeutic

Lung penetration: Therapeutic

Urine penetration: Therapeutic

Patients with infectious mononucleosis secondary to EBV and given amoxicillin or ampicillin may develop a rash and this is not indicative of a true allergy.