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A total of 150 children from two pediatric practices with clinical and bacteriologic evidence of acute group A beta-hemolytic streptococcal (GABHS) pharyngitis randomly received cefadroxil monohydrate (75 children) or phenoxymethyl penicillin (75 children). Cefadroxil was given once daily, while penicillin was given three times daily. The treatment groups were similar in age, sex, race, illness severity, and acute GABHS symptomatology. Throat cultures were routine 3 to 5 days after the start of therapy and 2 and 14 days after the end of therapy. The bacterial cure rates were 90% (62 of 69) for cefadroxil-treated patients and 76% (52 of 68) for penicillin-treated patients. This difference was significant (P < 0.04). The clinical response was satisfactory in 91% of cefadroxil-treated patients and 89% of penicillin-treated patients. We conclude that once-daily cefadroxil is at least as effective as three-times-daily penicillin in producing bacteriologic eradication and clinical symptomatic improvement in children with GABHS pharyngitis.

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