we evaluated the effect of treatment of gonorrhea on simultaneous chlamydia trachomatis infection by randomly assigning 293 heterosexual men and 246 heterosexual women with gonorrhea to receive one of the following treatment regimens : ( 1 ) 4.8 million units of aqueous procaine penicillin plus 1 g of probenecid , ( 2 ) nine tablets of trimethoprim-sulfamethoxazole daily for three days , or ( 3 ) 500 mg of tetracycline four times a day for five days .
C0018081
the
C0033209
probenecid