What dose of Augmentin (amoxicillin/clavulanate) should be given to a child if 3.2 ml is the calculated dose but hard to measure?

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Last updated: October 29, 2025View editorial policy

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Dosing of Amoxicillin/Clavulanate (Augmentin) When Calculated Dose is Difficult to Measure

When a calculated dose of 3.2 ml of Augmentin is difficult to measure, round to 3 ml for practical administration.

Practical Dosing Considerations

When faced with difficult-to-measure doses of liquid medications like Augmentin:

  • Round to the nearest measurable volume on the dosing device (typically 0.5 ml increments) 1
  • For a calculated dose of 3.2 ml, rounding to 3 ml (slightly under-dosing) is preferable to 3.5 ml (over-dosing) 1
  • Small deviations in dosing (within 10% of calculated dose) are unlikely to significantly impact treatment efficacy or safety 1, 2

Dosing Principles for Pediatric Augmentin

The appropriate dose depends on:

  • The specific formulation of Augmentin being used (different concentrations exist) 1
  • The indication for treatment 1
  • The weight of the child 1

Standard Dosing Guidelines

  • For mild to moderate respiratory infections: 45 mg/kg/day of amoxicillin component divided into 2 doses 1
  • For severe infections or areas with high pneumococcal resistance: 90 mg/kg/day of amoxicillin component divided into 2 doses 1
  • Maximum daily dose of amoxicillin component should not exceed 4000 mg (4 g) per day 1

Practical Administration Tips

  • Use the measuring device provided with the medication for most accurate dosing 2, 3
  • Oral syringes typically provide more accurate measurement than household teaspoons 2
  • Shake the suspension well before each use to ensure uniform distribution of medication 3
  • Administer with food to reduce gastrointestinal side effects 3, 4

Monitoring and Follow-up

  • Children on appropriate antibiotic therapy should show clinical improvement within 48-72 hours 5
  • If no improvement is seen within this timeframe, reevaluation is necessary 5
  • Common side effects include diarrhea, nausea, and vomiting 1, 6
  • The twice-daily formulation has been shown to cause less diarrhea than three-times-daily dosing 6

Important Considerations

  • Consistency in dosing is important for maintaining therapeutic levels 3
  • The newer twice-daily formulations of Augmentin provide equivalent efficacy with better tolerability compared to older three-times-daily formulations 6
  • Complete the full course of antibiotics as prescribed, even if symptoms improve before completion 5

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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