Penicillins

Antimicrobial Paediatric Dose Cost ($)/Day
amoxicillin 40mg/kg/d PO div tid 0.86
  90mg/kg/d PO div bid-tid

(see otitis media, sinusitis)

1.94
  90mg/kg/d PO div tid

(see CAP)

1.94
amoxicillin-clavulanate    
4:1 (25mg-6.25mg/mL or 50mg-12.5mg/mL) 40mg amox./kg/d PO div tid 2.93
7:1 (40mg-5.7mg/mL or 80mg-11.4mg/mL) 45-90mg amox/kg/d PO div bid

(see otitis media, sinusitis, CAP)

3.10 - 6.19
  ≥ 3 months old (4-40kg)  

5:1 ratio (500mg-100mg

and 1000mg-200mg)

75mg-15mg/kg/d IV div q8h

8.94

6.00

10:1 ratio (2000mg-200mg)

150mg-15mg/kg/d IV div q8h 8.67
ampicillin 100-200mg/kg/d IV div q6h 10.65 - 21.29
meningitis/CNS infections/endocarditis 300-400mg/kg/d IV div q4-6h 31.94 - 42.58
penicillin VK 25-50mg/kg/d PO div tid-qid 0.52 - 1.03
penicillin G Na 100,000-250,000 units/kg/d IV div q6h 2.04 - 5.10
severe infections 250,000-400,000 units/kg/d IV div q4h 5.10 - 8.16
cloxacillin PO 40-50mg/kg/d PO div qid 3.09 - 3.86
  100mg/kg/d PO div qid 2.93 - 7.72
cloxacillin IV 100-200mg/kg/d IV div q4-6h 11.20 - 22.40
piperacillin-tazobactam 240-300mg piperacillin/kg/d IV div q6-8h 10.01 - 12.52

CAP = community-acquired pneumonia

CNS = central nervous system