The objective of the present trial was to compare the efficacy, safety, and tolerability of moxifloxacin (400 mg) given intravenously (i.v.) once daily followed by oral moxifloxacin (400 mg) for 7 to 14 days with the efficacy, safety, and tolerability of co-amoxiclav (1.2 g) administered by i.v. infusion three times a day followed by oral co-amoxiclav (625 mg) three times a day, with or without clarithromycin (500 mg) twice daily (i.v. or orally), for 7 to 14 days in adult patients with community-acquired pneumonia requiring initial parenteral therapy. The rates of drug-related adverse events were comparable in both groups (38.9% in each treatment group). The overall incidence of laboratory abnormalities was similar in both groups. Thus, it is concluded that monotherapy with moxifloxacin is superior to that with a standard combination regimen of a ␤-lactam and a ␤-lactamase inhibitor, co-amoxiclav, with or without a macrolide, clarithromycin, in the treatment of patients with community-acquired pneumonia admitted to a hospital.

In this multinational, randomized, double-blind study, the efficacy and safety of a 5 day course of moxifloxacin 400 mg orally od was compared with that of a 7 day course of clarithromycin 500 mg orally bd. in 750 patients with acute exacerbations of chronic bronchitis, characterized by at least two of the symptoms: sputum purulence, increased sputum volume or increased dyspnoea. Seven days after the end of therapy, clinical cure was achieved for 89% (287 of 322) of efficacy-evaluable patients in the moxifloxacin group and 88% (289 of 327) of patients in the clarithromycin group (95% CI, -3.9%, 5.8%). At follow-up (21-28 days post-treatment), the continued clinical cure rates were 89% (256 of 287) for moxifloxacin and 89% (257 of 289) for clarithromycin. A total of 342 pathogenic bacteria were isolated from the sputum of 287 patients. The most common pathogens were Haemophilus influenzae (37%), Streptococcus pneumoniae (31%) and Moraxella catarrhalis (18%). Seven days post-treatment, a successful bacteriological response was obtained for 77% (89 of 115) of patients in the moxifloxacin group and 62% (71 of 114) of patients in the clarithromycin group, indicating superiority of moxifloxacin (95% CI, 3.6%, 26.9%). Both treatments were well tolerated with few adverse events. This study demonstrated that for the treatment of acute exacerbations of chronic bronchitis a 5 day course of moxifloxacin 400 mg od was clinically equivalent and bacteriologically superior to a 7 day course of clarithromycin 500 mg bd.

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Based on recent guidelines for the management of community-acquired pneumonia, this study was designed to evaluate the effectiveness of a new fluoroquinolone compared with standard antimicrobial regimens, in conditions relating as closely as possible to the real world setting.In this study, 564 patients were randomised to either oral moxifloxacin (400 mg o.d.) or to standard oral therapy (amoxicillin 1 g t.i.d. or clarithromycin 500 mg b.i.d. alone or in combination) for up to 14 days using a double-blind procedure. The choice between the three standard regimens was made by the clinician prior to randomisation. Clinical response, quality of life, symptoms, healthcare resources and safety were assessed.In the per-protocol population, clinical success was reported for 201 of 215 (93.5%) and 217 of 231 (93.9%) in the moxifloxacin and standard groups, respectively, at 7-10 days post-therapy. At 28-35 days follow-up, continued clinical cure was observed in 183 of 192 (95.3%) moxifloxacin and 207 of 221 (93.7%) standard groups. Drug-related adverse events were reported in 55 of 274 (20%) moxifloxacin and 86 of 279 (31%) standard patients with diarrhoea w5%.Oral moxifloxacin monotherapy was as effective as, and better tolerated than, optimal antibiotic strategy represented either by mono-or combination therapy (amoxicillin and/or clarithromycin) in community-acquired pneumonia management.

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