High‑Dose Amoxicillin for Acute Otitis Media in Children

First‑Line Therapy

The 2013 American Academy of Pediatrics/American Academy of Family Physicians (AAP/AAFP) guidelines give a strong recommendation for high‑dose amoxicillin (80–90 mg/kg/day) as the first‑line treatment of acute otitis media in children to overcome Streptococcus pneumoniae resistance. 1

High‑dose amoxicillin achieves middle‑ear fluid concentrations sufficient to eradicate penicillin‑nonsusceptible S. pneumoniae. 2
Standard‑dose amoxicillin (40–45 mg/kg/day) does not reliably treat resistant organisms. 2

Children should be re‑evaluated at 48–72 hours after therapy initiation if clinical improvement is absent. This recommendation is supported by both the AAP/AAFP guideline and the American Family Physician (2004) article. [1][3]

When a child has received amoxicillin within the preceding 30 days or has concurrent purulent conjunctivitis, the guideline advises using high‑dose amoxicillin‑clavulanate (amoxicillin 90 mg/kg/day + clavulanate 6.4 mg/kg/day). [1][2]
This combination provides coverage against β‑lactamase‑producing Haemophilus influenzae and Moraxella catarrhalis. [1][2]
For a 21 kg child, the amoxicillin component of this regimen corresponds to approximately 945 mg twice daily. 1

Weight‑based dosing should be adhered to; the calculated total daily dose of 1680–1890 mg (≈80–90 mg/kg/day) exceeds the typical adult maximum (≈1500 mg/day) but is appropriate to achieve therapeutic efficacy. 1