Erythromycin and tetracycline hydrochloride in the treatment of non-gonococcal urethritis.

A total of 158 cases of non-gonococcal urethritis has been treated with erythromycin or tetracycline hydrochloride administered orally. Patients who had been previously treated, or had been given less than 6-0 g. of the antibiotic, have been excluded, and this paper contrasts the results of 62 previously untreated cases given 6-0 g. erythromycin (as 300 mg. four times a day for 5 days) with those of 58 previously untreated cases given 6-0 g. tetracycline (as 250 mg. four times daily for 6 days).