Amoxicillin Dosing for Omphalitis in Infants

Recommended Treatment Approach

• Parenteral therapy is strongly preferred for serious infections in young infants, particularly those under 3 months of age, due to the potentially serious nature of omphalitis 1
• The American Academy of Pediatrics recommends ampicillin 200 mg/kg/day IV divided every 6 hours for the treatment of omphalitis in neonates 2
• Gentamicin dosing for neonates with omphalitis is based on gestational age and postnatal age, with a recommended dose of 5 mg/kg/dose IV every 24 hours for infants with gestational age ≥35 weeks and postnatal age >7 days 3, 4
• Alternative regimens for omphalitis include ampicillin-sulbactam 200 mg/kg/day IV divided every 6 hours, and piperacillin-tazobactam 80 mg/kg/dose IV every 6 hours for neonates with postmenstrual age >30 weeks 2, 3, 4

Oral Therapy Considerations

• If oral therapy is deemed necessary for low-risk cases, amoxicillin dosing would be 40-90 mg/kg/day divided in 2-3 doses, with a total daily dose of 172-387 mg/day for a 4.3kg infant 3, 4