plasma levels and renal excretion of sulphonamide and trimethoprim following oral administration of co-trimazine ( 140 mg sulphadiazine + 90 mg trimethoprim ) and co-trimoxazole ( 800 mg sulphamethoxazole + 180 mg trimethoprim ) were monitored in healthy volunteers after a single dose and in the steady state after 12-hourly dosage .
C0041041
trimethoprim
C0041044
sulphamethoxazole