Treatment for Strep Throat in Children

First-Line Treatment Options

The Infectious Diseases Society of America recommends oral penicillin V or amoxicillin for 10 days as the first-line treatment for a 9-year-old boy with confirmed strep throat 1, 2
Oral penicillin V is recommended at a dose of 250 mg two or three times daily for 10 days 3
Amoxicillin is recommended at a dose of 50 mg/kg once daily (maximum 1000 mg) or 25 mg/kg twice daily (maximum 500 mg per dose) for 10 days 1, 2
Intramuscular benzathine penicillin G is recommended as a single dose of 600,000 units for children <27 kg or 1,200,000 units for children ≥27 kg 1

For children with non-anaphylactic penicillin allergy, the Infectious Diseases Society of America recommends cephalexin at 20 mg/kg twice daily (maximum 500 mg per dose) for 10 days 1
For children with non-anaphylactic penicillin allergy, cefadroxil is recommended at 30 mg/kg once daily (maximum 1 g) for 10 days 1
For children with anaphylactic penicillin allergy, clindamycin is recommended at 7 mg/kg three times daily (maximum 300 mg per dose) for 10 days 1
For children with anaphylactic penicillin allergy, azithromycin is recommended at 12 mg/kg once daily (maximum 500 mg) for 5 days 1
For children with anaphylactic penicillin allergy, clarithromycin is recommended at 7.5 mg/kg twice daily (maximum 250 mg per dose) for 10 days 1

A complete 10-day course of antibiotics is essential to prevent acute rheumatic fever, even if symptoms resolve earlier 1, 2
Treatment should be initiated within 9 days of symptom onset to effectively prevent acute rheumatic fever 4

Acetaminophen or NSAIDs may be used for moderate to severe symptoms or fever control 2, 4
Aspirin should be avoided in children due to the risk of Reye syndrome 2, 4
Adequate hydration and rest should be encouraged 4

Routine post-treatment testing is not recommended unless symptoms persist or recur 5
If symptoms persist beyond 48-72 hours, consider complications or treatment failure 5

Treating without confirming diagnosis through testing (rapid antigen detection test or throat culture) 4
Prescribing antibiotics for viral pharyngitis, which contributes to antimicrobial resistance 3
Inadequate duration of therapy (less than 10 days), which may lead to treatment failure and complications 1