A Clinical Trial of Cotrimazine (Sulfadiazine + Trimethoprim) in Flare-Ups of Chronic Bronchitis

The authors treated acute flare-ups of chronic bronchitis with a combination of sulfadiazine (SDZ) and trimethoprim (TMP) (cotrimazine). They treated thirty patients for a week, with daily dosages of 900 mg SDZ and 300 mg TMP, in an open trial in comparison with ampicillin 2 g daily.The result of treatment (course and duration of the acute episode, fever, cough, dyspnoea, sputum amount and description, chest sounds, ESR, and WBC count), tested by suitable statistical methods, showed that cotrimazine had excellent therapeutic activity and was readily tolerated; over-all results compared closely with those obtained with ampicillin.In their concluding remarks the authors state that in addition to being effective in the morbid condition selected for trial, cotrimazine offers some advantages over similar combinations of TMP and other sulfonamides, both because of the intrinsic physicochemical and pharmacological properties of SDZ and because of its lower dosage in this combination.