title: 6-day amoxicillin versus 10-day penicillin V for group A beta-haemolytic streptococcal acute tonsillitis in adults: a French multicentre, open-label, randomized study. The French Study Group Clamorange.
abstract: We compared the efficacy and safety of amoxicillin 1 g b.i.d. for 6 days and penicillin V 1 MU t.i.d. for 10 days in the treatment of group A beta-haemolytic streptococcal (GABHS) tonsillitis in adults. 342 patients with acute tonsillitis and a positive test for streptococcal antigen were included in a multicentre, randomized, open-label study; 338 patients were evaluable in an intention-to-treat analysis, and 234 with a positive throat swab culture in a per-protocol analysis. In the per-protocol analysis, the GABHS eradication rate at the end of treatment was comparable in the two groups: 92% (115/125) on amoxicillin and 92.7% (101/109) on penicillin (p = 0.95), as were the clinical success rates of 96% and 95.4%, respectively (p = 0.92). At the follow-up visit (day 28-32), 90.8% of patients treated with amoxicillin and 92.6% of those treated with penicillin V were free of GABHS (p = 0.85). Sore throat disappeared significantly faster on day 2 (p = 0.039) in the amoxicillin group. The intention-to-treat analysis gave similar clinical results. Tolerability was good in both groups. The efficacy and safety of amoxicillin 1 g b.i.d. for 6 days were not statistically different from those of penicillin V 1 MU t.i.d. for 10 days in the treatment of streptococcal tonsillitis in adults.
authors.affiliation: Service des maladies infectieuses et tropicales, Hôpital de la Croix-Rousse, Lyon, France.
authors.forename: D
authors.initials: D
authors.lastname: Peyramond
authors.forename: H
authors.initials: H
authors.lastname: Portier
authors.forename: P
authors.initials: P
authors.lastname: Geslin
authors.forename: R
authors.initials: R
authors.lastname: Cohen
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000658:Amoxicillin / Q000009:adverse effects / Q000627:therapeutic use*; D000942:Antigens, Bacterial / Q000032:analysis; D004334:Drug Administration Schedule; D005260:Female; D005602:France; D006801:Humans; D008297:Male; D010404:Penicillin V / Q000009:adverse effects / Q000627:therapeutic use*; D010406:Penicillins / Q000009:adverse effects / Q000627:therapeutic use*; D010614:Pharynx / Q000382:microbiology; D013290:Streptococcal Infections / Q000188:drug therapy* / Q000209:etiology; D013297:Streptococcus pyogenes / Q000276:immunology / Q000302:isolation & purification*; D014069:Tonsillitis / Q000188:drug therapy* / Q000382:microbiology
chemical_list: D000942:Antigens, Bacterial; D010406:Penicillins; D000658:Amoxicillin; D010404:Penicillin V