Ampicillin
C difficile risk
Low
Oral Bioavailability
N/A
Cost
$
Spectrum Of Activity
Dosing
0 - 1.2 kg50 mg/kg/dose IV q12h
0 - 1.2 kg50 mg/kg/dose IV q8h
1.21 - 2 kgGreater than 2 kg50 mg/kg/dose IV q12h50 mg/kg/dose IV q8h
1.21 - 2 kgGreater than 2 kg50 mg/kg/dose IV q8h50 mg/kg/dose IV q6h
0 - 7 days (Postnatal age) Greater than 8 days (Postnatal age) 200-300 mg/kg/24h IV divided q8h300 mg/kg/24h IV divided q6h
General Information
VRE UTI Usage
Ampicillin should be considered the drug of choice for VRE UTIs if the isolate is susceptible; Gentamicin 1 mg/kg IV q8h can be used with ampicillin for synergistic combination therapy in complicated UTIs if in-vitro susceptibility without high level gentamicin resistance. Amoxicillin is good oral choice for uncomplicated cystitis.