Treatment of Streptococcal Pharyngitis

First-Line Treatment Options

The American Academy of Family Physicians recommends penicillin or amoxicillin as the first-line treatment for streptococcal pharyngitis due to their proven efficacy, safety, narrow spectrum of activity, and low cost 1, 2
For patients without penicillin allergy, the Infectious Diseases Society of America recommends oral penicillin V (10-day course) with a dosage of 250 mg two or three times daily for children and 250 mg four times daily or 500 mg twice daily for adolescents and adults 3, 4, 2
For patients without penicillin allergy, the American Academy of Family Physicians recommends oral amoxicillin (10-day course) with a dosage of 50 mg/kg once daily (maximum = 1,000 mg) or 25 mg/kg twice daily (maximum = 500 mg) 3, 4, 2
The American Academy of Pediatrics recommends intramuscular benzathine penicillin G (single dose) for patients unlikely to complete a full 10-day oral course, with a dosage of 600,000 units for patients < 60 lb (27 kg) and 1,200,000 units for patients ≥ 60 lb 6, 2

The Centers for Disease Control and Prevention recommends testing for patients with clinical features suggesting streptococcal infection, including sudden onset of sore throat, fever, headache, tonsillopharyngeal inflammation or exudates, and tender anterior cervical lymphadenopathy 6, 2
A positive rapid antigen detection test (RADT) is diagnostic for group A streptococcal pharyngitis, according to the Infectious Diseases Society of America 4
The American Academy of Family Physicians recommends a backup throat culture for children and adolescents with negative RADT results 4, 1

The American Academy of Family Physicians recommends acetaminophen or NSAIDs for moderate to severe symptoms or high fever, but advises against aspirin in children due to the risk of Reye syndrome 1, 2

The Infectious Diseases Society of America recommends a standard 10-day course of antibiotics to ensure complete eradication of the organism and prevent rheumatic fever 1, 3
For patients with recurrent pharyngitis, the American Academy of Family Physicians recommends retreatment with the same agent used initially, intramuscular benzathine penicillin G if compliance with oral therapy is questionable, or clindamycin or amoxicillin/clavulanate for chronic carriers 6, 7, 6

The Infectious Diseases Society of America advises against overtreatment by avoiding antibiotics for likely viral pharyngitis (with cough, rhinorrhea, hoarseness, oral ulcers) 1
The American Academy of Pediatrics recommends against routine post-treatment throat cultures for asymptomatic patients 1, 7