[Effects and side effects of benzbromaron in the initial treatment of hyperuricemia and gout. Results of a field study on 3899 patients].

In a collective of 3899 out-patients, the effect of uric acid reduction of benzbromarone was tested. Ten days after beginning of treatment, a uric acid concentration of 5.1 to 5.7 mg/100 ml had been obtained. Three months after beginning of therapy, uric acid values were at 4.9 mg/100 ml, independently of age and sex. As side-effects were observed:diarrhoea in 1% (n = 41) of the treated patients, furthermore, 0,8% (n = 31) complained of gastro-intestinal trouble such as pressure over the stomach, nausea, sensation of fullness and epigastric pain. Only in 2 of the 3899 patients (0.05%) the appearance of a renal colic was observed.