What dose of Augmentin (amoxicillin/clavulanate) oral suspension should be given to a child weighing 11.48 kg?

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Last updated: November 2, 2026 • View editorial policy

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Dosing Recommendation for Augmentin 250-62.5mg/5ml

For a child weighing 11.48 kg, administer 5 mL of Augmentin 250-62.5mg/5ml suspension three times daily for 7-10 days.

Rationale

This dosing is based on the British Thoracic Society guidelines 1 and FDA labeling 2, which recommend co-amoxiclav for children aged 1-6 years at a dose of 5 mL of the 125/31 suspension three times daily. However, since you have the 250/62 formulation available, the same volume (5 mL) given three times daily is appropriate for this weight range.

Dose Calculation Verification

  • Target dose: The standard pediatric dosing for community-acquired infections is 40-45 mg/kg/day of the amoxicillin component 1, 3
  • Your child's dose: 5 mL of 250-62.5mg/5ml suspension = 250 mg amoxicillin per dose
  • Daily total: 250 mg × 3 = 750 mg/day
  • Per kg: 750 mg ÷ 11.48 kg = 65.3 mg/kg/day

This dose is appropriate and falls within the recommended range. For more severe infections or resistant organisms, guidelines support doses up to 80-90 mg/kg/day 3, 4.

Administration Instructions

  • Give at the start of meals to minimize gastrointestinal side effects and enhance clavulanate absorption 2
  • Shake the suspension well before each dose
  • Duration: 7-10 days for most respiratory infections 1; 10 days for pneumonia 5

Important Caveats

Watch for diarrhea: Protocol-defined diarrhea occurs in approximately 13-26% of children on standard amoxicillin-clavulanate formulations 2, 6. The 250/62 formulation has a higher clavulanate ratio (1:4) compared to newer formulations, which may increase gastrointestinal side effects.

Alternative if diarrhea develops: If significant diarrhea occurs, consider switching to amoxicillin alone (without clavulanate) at 90 mg/kg/day if β-lactamase-producing organisms are not suspected 3.

Assess response at 48-72 hours: If no clinical improvement occurs within this timeframe, further investigation is warranted 3, 4.

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.