six healthy two-day-old foals ( 3 pony foals and 3 horse foals ) were given a single intravenous ( iv ) injection of trimethoprim ( tmp ) -- sulphamethoxazole ( smz ) at a dosage of 2.5 mg of tmp/kg bodyweight ( bwt ) and 12.5 mg of smz/kg bwt .
C0041044
trimethoprim
C0038689
smz