What is the appropriate dose of oral amoxicillin (amoxicillin) for a child with a weight of 56 kilograms?

Medical Advisory BoardAll articles are reviewed for accuracy by our Medical Advisory Board
Educational purpose only • Exercise caution as content is pending human review
Article Review Status
Submitted
Under Review
Approved

Last updated: April 7, 2025View editorial policy

Personalize

Help us tailor your experience

Which best describes you? Your choice helps us use language that's most understandable for you.

From the Guidelines

For a 56kg child, the appropriate dose of oral amoxicillin is 90 mg/kg/day in 2 doses or 45 mg/kg/day in 3 doses, as recommended for the treatment of Streptococcus pneumoniae with MICs for penicillin <2.0 µg/mL 1.

Key Considerations

  • The dose of oral amoxicillin may vary depending on the specific infection being treated, with different dosing recommendations for different pathogens.
  • For Group A Streptococcus, a dose of 50-75 mg/kg/day in 2 doses is recommended 1.
  • The total daily dose should generally not exceed 3000mg.
  • Treatment duration typically ranges from 7-10 days for most common infections, though some conditions may require longer courses.

Important Notes

  • Amoxicillin should be taken with or without food, and the full course should be completed even if symptoms improve.
  • Common side effects include diarrhea, nausea, and rash.
  • If the child has a history of penicillin allergy, amoxicillin should be avoided.
  • Dosing is based on the child's weight to ensure adequate blood levels of the antibiotic to effectively fight the infection while minimizing side effects.

Pathogen-Specific Dosing

  • For Streptococcus pneumoniae with MICs for penicillin <2.0 µg/mL, the recommended dose is 90 mg/kg/day in 2 doses or 45 mg/kg/day in 3 doses 1.
  • For Group A Streptococcus, the recommended dose is 50-75 mg/kg/day in 2 doses 1.
  • For other pathogens, such as Staphylococcus aureus, the recommended dose may vary depending on the specific infection and the child's weight.

From the Research

Amoxicillin Dosage for a 56kg Child

  • The provided studies do not directly address the appropriate dose of oral amoxicillin for a 56kg child 2, 3, 4, 5, 6.
  • These studies focus on the allergic reactions to amoxicillin and clavulanic acid, as well as the importance of skin testing and drug provocation tests in diagnosing allergies to these drugs.
  • The studies also discuss the role of amoxicillin-clavulanic acid in treating conditions such as ulcerative colitis, but do not provide information on the appropriate dosage for a child of a specific weight.
  • To determine the appropriate dose of oral amoxicillin for a 56kg child, it is recommended to consult a pediatrician or a reliable medical resource, as the dosage may vary depending on the specific condition being treated and the child's individual needs.

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.

Have a follow-up question?

Our Medical A.I. is used by practicing medical doctors at top research institutions around the world. Ask any follow up question and get world-class guideline-backed answers instantly.