the 25 premenopausal women with recurrent urinary tract infections were subjected to early postcoital prophylaxis consisting of bladder voiding and the administration of a single tablet of either cotrimoxazole ( 80 mg. trimethoprim plus 400 mg. sulfamethoxazole ) , nalidixic acid ( 500 mg. ) , nitrofurantoin ( 50 or 100 mg. ) or sulfonamides ( 500 mg. sulfisoxazole or 250 mg. sulfamethizole ) .
C0005682
bladder
C0042034
voiding