What is the recommended dosage and frequency of Augmentin (amoxicillin/clavulanate) IV in pediatric patients, in mg/kg?

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Last updated: November 21, 2025View editorial policy

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Augmentin IV Dosing for Pediatric Patients

Recommended Dosage

For pediatric patients requiring intravenous Augmentin (amoxicillin/clavulanate), the standard dosage is 100-200 mg/kg/day of the amoxicillin component, divided into 3-4 doses administered every 6-8 hours. 1

Specific Dosing Parameters

  • Standard dose range: 100-200 mg/kg/day divided into 3-4 doses 1
  • Administration: Given by short IV infusion 1
  • Frequency: Every 6-8 hours (3-4 times daily) 1
  • Maximum daily dose: Up to 4000 mg (4 g) per day of the amoxicillin component for severe infections 2

Dosing by Severity

For mild to moderate infections:

  • Use the lower end of the dosing range (100-150 mg/kg/day) 1
  • Divide into 3-4 doses 1

For severe infections or high-resistance areas:

  • Use higher dosing up to 200 mg/kg/day 1
  • Consider maximum dosing of 90 mg/kg/day for oral formulations when transitioning from IV 2

Clinical Efficacy Data

The evidence demonstrates excellent outcomes with IV Augmentin in pediatric populations:

  • Complete clinical cure or distinct improvement was achieved in 100% of assessable cases in a study of 58 children (mean age 6 years) with lower respiratory tract infections 1
  • Bacteriological success was obtained in 92% of assessable cases 1
  • The formulation was well-tolerated with minimal adverse effects 1

Important Clinical Considerations

Administration Guidelines

  • Administer by short IV infusion, not as a bolus 1
  • Most patients in clinical trials were hospitalized for lower respiratory tract infections 1
  • The dosage range of 100-200 mg/kg/day has been validated in children aged 1-15 years 1

Transition to Oral Therapy

When transitioning from IV to oral Augmentin:

  • For respiratory infections: 45 mg/kg/day in 2 doses for mild-moderate infections 2
  • For severe infections or high pneumococcal resistance: 90 mg/kg/day in 2 doses 2
  • Treatment duration typically 7-10 days for respiratory infections 2

Safety Profile

  • Adverse effects are minimal with IV formulation 1
  • Mild, transient exanthema may occur rarely (reported in 2 patients in clinical trials) 1
  • No additional therapeutic measures were required for adverse effects in clinical studies 1

References

Guideline

Amoxicillin Dosing Guidelines for Pediatric Patients

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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