concentrations in the plasma reached after oral administration of 500 mg cefradine four times daily and 400/80 mg co-trimoxazole four times daily were for cefradine 100 micrograms/ml , for trimethoprim 15 micrograms/ml , and for sulfamethoxazole 100 micrograms/ml , respectively .
C0041044
co-trimoxazole
C0038689
sulfamethoxazole