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. 1974 Feb;5(2):114–118. doi: 10.1128/aac.5.2.114

Comparative Therapeutic and Pharmacological Evaluation of Amoxicillin and Ampicillin Plus Probenecid for the Treatment of Gonorrhea

Walter W Karney 1,2,3, Marvin Turck 1,2,3, King K Holmes 1,2,3
PMCID: PMC428931  PMID: 4599858

Abstract

Single doses of 3.5 g of ampicillin with 1.0 g of probenecid or of 3.0 g of amoxicillin alone were administered orally to 58 males and 56 females with uncomplicated gonococcal infection. The failure rate for genital or anal infection, or both, was 1.7% for ampicillin plus probenecid and 4.2% for amoxicillin alone. However, patients with oropharyngeal infection responded poorly. Seventy-five isolates of Neisseria gonorrhoeae recovered from patients in this study were all inhibited by 1.0 μg or less of ampicillin or amoxicillin per ml; penicillin G, ampicillin, and amoxicillin had similar activity in vitro against these isolates. Serum concentrations of amoxicillin in 10 volunteers remained above the minimal inhibitory concentration for most strains of N. gonorrhoeae for periods up to 10 h after a 3.0-g oral dose. After 2.0 g of ampicillin was given with probenecid, the serum levels during the 5- to 12-h period approached those achieved with 3.5 g of ampicillin plus probenecid, and actually exceeded levels attained during the same interval with 3.0 g of amoxicillin administered alone.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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