Augmentin Dosing for an 11.96 kg Child
For a child weighing 11.96 kg, the appropriate dose of Augmentin 400 mg/5 mL suspension depends on the infection severity: for mild-to-moderate infections, administer 6.7 mL twice daily (45 mg/kg/day); for severe infections or high pneumococcal resistance areas, administer 13.5 mL twice daily (90 mg/kg/day). 1, 2
Weight-Based Calculation
Standard-Dose Regimen (45 mg/kg/day)
- For mild-to-moderate respiratory tract infections, the recommended dose is 45 mg/kg/day divided every 12 hours 1, 2
- Calculation: 11.96 kg × 45 mg/kg/day = 538 mg/day total
- Per dose (twice daily): 269 mg per dose
- Using 400 mg/5 mL suspension: 3.4 mL per dose, rounded to 6.7 mL twice daily 2
High-Dose Regimen (90 mg/kg/day)
- For severe infections, community-acquired pneumonia, or areas with high pneumococcal resistance (>10%), the recommended dose is 90 mg/kg/day divided every 12 hours 1, 2
- Calculation: 11.96 kg × 90 mg/kg/day = 1,076 mg/day total
- Per dose (twice daily): 538 mg per dose
- Using 400 mg/5 mL suspension: 6.7 mL per dose, rounded to 13.5 mL twice daily 1, 2
Indication-Specific Dosing
When to Use Standard Dose (45 mg/kg/day)
- Uncomplicated respiratory infections in children ≥2 years without recent antibiotic exposure 1
- Acute bacterial sinusitis in children ≥2 years who do not attend daycare and have not received antibiotics in the past 4 weeks 1
- Less severe infections without risk factors for resistant organisms 2
When to Use High Dose (90 mg/kg/day)
- Age <2 years (this 11.96 kg child is likely in this category) 1
- Daycare attendance 1
- Recent antibiotic use within the past 30 days 1
- Community-acquired pneumonia 1, 2
- Moderate-to-severe illness 1
- Geographic areas with >10% penicillin-resistant Streptococcus pneumoniae 1
Treatment Duration and Monitoring
- Complete a 7-10 day course for most respiratory infections; pneumonia specifically requires 10 days 1, 3
- Clinical improvement should occur within 48-72 hours; if no improvement, reassess for treatment failure, atypical pathogens, or complications 1, 3
- Continue therapy for at least 48-72 hours after complete symptom resolution 1
Administration Guidelines
- Administer at the start of meals to enhance clavulanate absorption and minimize gastrointestinal side effects 2
- Amoxicillin/clavulanate may be taken without regard to meals, but meal-time administration improves tolerability 2
- Do not discontinue early even if symptoms improve; completing the full course prevents resistance and recurrence 3
Critical Dosing Considerations
- Maximum daily dose: 4,000 mg/day of the amoxicillin component regardless of weight 1
- The 400 mg/5 mL suspension is specifically recommended for children in this weight range per FDA labeling 2
- For this 11.96 kg child, both standard and high-dose regimens remain well below the maximum daily limit 1, 2
Common Pitfalls to Avoid
- Do not underdose: Given increasing pneumococcal resistance, the high-dose regimen (90 mg/kg/day) is increasingly preferred for most infections in young children 1, 4
- Do not substitute formulations: Different Augmentin formulations contain varying ratios of amoxicillin to clavulanate and are not interchangeable 2
- Assess risk factors carefully: Even one risk factor (age <2 years, daycare, recent antibiotics, or moderate-severe illness) warrants the high-dose regimen 1
- Monitor for adverse effects: Amoxicillin-clavulanate carries higher risk of gastrointestinal symptoms and yeast infections compared to amoxicillin alone 5