What is the pediatric dose for Clavulin (amoxicillin-clavulanate)?

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Last updated: October 26, 2025View editorial policy

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Pediatric Dosing for Amoxicillin-Clavulanate (Clavulin)

For pediatric patients, the recommended dose of amoxicillin-clavulanate (Clavulin) is 90 mg/kg/day of the amoxicillin component divided into 2 doses for most respiratory tract infections, with a maximum of 4000 mg/day. 1

Standard Dosing Regimens

  • For children with uncomplicated infections, a standard dose of 45 mg/kg/day of amoxicillin with 6.4 mg/kg/day of clavulanic acid divided into 3 doses can be used 1
  • For more severe infections or in areas with high prevalence of resistant pathogens, the high-dose regimen is preferred 1
  • For children less than 12 weeks (3 months) old, the recommended upper dose is 30 mg/kg/day divided every 12 hours due to incompletely developed renal function 2

High-Dose Regimen

  • High-dose amoxicillin-clavulanate is defined as 90 mg/kg/day of amoxicillin with 6.4 mg/kg/day of clavulanic acid in two divided doses 1
  • This high-dose formulation provides a 14:1 ratio of amoxicillin to clavulanic acid in oral suspension 1, 3
  • High-dose therapy is particularly recommended for areas with high prevalence of penicillin-resistant Streptococcus pneumoniae (>10%) 1

Specific Indications

  • For presumed bacterial pneumonia in outpatient children under 5 years old: amoxicillin-clavulanate with amoxicillin component at 90 mg/kg/day in 2 doses 4
  • For non-severe childhood pneumonia where amoxicillin has failed: high-dose amoxicillin-clavulanate (80-90 mg/kg/day amoxicillin component) for 5 days 5
  • For β-lactamase producing H. influenzae infections: amoxicillin-clavulanate at 45 mg/kg/day in 3 doses or 90 mg/kg/day in 2 doses 1

Duration of Therapy

  • The Infectious Diseases Society of America recommends treatment courses of 10 days for most pediatric infections 1
  • For pneumonia, treatment should be continued for a minimum of 48 to 72 hours beyond the time that the patient becomes asymptomatic 2
  • For infections caused by Streptococcus pyogenes, at least 10 days of treatment is recommended to prevent acute rheumatic fever 2

Administration Guidelines

  • To minimize gastrointestinal intolerance, amoxicillin-clavulanate should be taken at the start of a meal 2
  • Once or twice daily dosing has been shown to be as effective as three times daily dosing, which may improve compliance 6
  • Oral suspension should be shaken well before using and can be administered directly or mixed with formula, milk, fruit juice, water, or cold drinks 2

Dosage Adjustments for Special Populations

  • For patients with renal impairment (GFR 10-30 mL/min): 500 mg or 250 mg every 12 hours, depending on infection severity 2
  • For severe renal impairment (GFR <10 mL/min): 500 mg or 250 mg every 24 hours 2
  • For patients on hemodialysis: administer an additional dose both during and at the end of dialysis 2

Common Adverse Effects

  • The most frequent adverse events in children are mild gastrointestinal disturbances, particularly diarrhea 1, 7
  • Diarrhea is generally less frequent with twice-daily than with three-times-daily treatment 7
  • The high-dose formulation has shown similar tolerability to conventional twice-daily formulation in clinical trials 7

Remember that the specific dose should be based on the severity of infection, local resistance patterns, and patient factors. The high-dose formulation was specifically developed to address concerns about increasing resistance among common respiratory pathogens.

References

Guideline

Amoxicillin-Clavulanate Dosing in Pediatric Patients

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Guideline

Amoxicilina-Ácido Clavulánico Dosing Guidelines

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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