What is the recommended dose of Augmentin (amoxicillin-clavulanate) for a 1-year-old child with sinusitis?

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Last updated: March 28, 2025View editorial policy

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From the Guidelines

For a 1-year-old child with sinusitis, the recommended dose of Augmentin (amoxicillin-clavulanate) is 80-90 mg/kg per day of the amoxicillin component, divided into two doses given every 12 hours, due to the child's young age and potential risk factors for resistance 1.

Key Considerations

  • The American Academy of Pediatrics recommends amoxicillin-clavulanate as a first-line treatment option for acute bacterial sinusitis in children, especially in cases where resistance is suspected or in children under 2 years of age 1.
  • The dosage of 80-90 mg/kg per day is recommended for children under 2 years of age or those with risk factors for resistance, such as attendance at child care or recent antimicrobial treatment 1.
  • The treatment duration is typically 10-14 days, but the exact duration may vary depending on the child's response to treatment and individual factors 1.

Administration and Monitoring

  • Augmentin should be given with food to reduce stomach upset, and the suspension should be refrigerated and shaken well before each dose.
  • Watch for side effects including diarrhea, diaper rash, or allergic reactions, and consult the child's pediatrician if any concerns arise.
  • It is essential to complete the full course of antibiotics even if symptoms improve earlier to ensure effective treatment and prevent the development of resistance.

From the FDA Drug Label

Based on the amoxicillin component, amoxicillin and clavulanate potassium should be dosed as follows: Patients Aged 12 weeks (3 months) and Older: Table 1: Dosing in Patients Aged 12 weeks (3 months) and Older INFECTIONDOSING REGIMEN Every 12 hours 200 mg/5 mL or 400 mg/5 mL oral suspension a Otitis media b, sinusitis, lower respiratory tract infections, and more severe infections 45 mg/kg/day every 12 hours

For a 1-year-old child with sinusitis, the recommended dose of Augmentin (amoxicillin-clavulanate) is 45 mg/kg/day every 12 hours using the 200 mg/5 mL or 400 mg/5 mL oral suspension, based on the amoxicillin component 2.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 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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