Penicillin G
Neonatal

Neonatal

Meningitis

0-7 days post-natal age
  • Weight <2kg: 80,000-150,000 units/kg/dose IV/IM q8h

  • Weight ≥2kg: 80,000-150,000 units/kg/dose IV/IM q8h

>7 days

112,000 units/kg/dose IV/IM q6h

Other Infection

0-7 days post-natal age
  • Weight <2kg: 25,000 units/kg/dose IV/IM q12h

  • Weight ≥2kg: 25,000 units/kg/dose IV/IM q8h

>7 days
  • Weight <1.2kg: 25,000 units/kg/dose IV/IM q12h

  • Weight ≥1.2-2kg: 25,000 units/kg/dose IV/IM q8h

  • Weight ≥2kg: 25,000 units/kg/dose IV/IM q6h

Congenital Syphilis

0-7 days post-natal age
  • Weight <2kg; 50,000 units/kg/dose IV/IM q12h

  • Weight ≥2kg: 50,000 units/kg/dose IV/IM q12h

8-28 days
  • 50,000 units/kg/dose IV/IM q8h
  • See Infants & Children for treatment of >28 day olds