Treatment of infections in horses caused by bacteria sensitive to the combination of trimethoprim and sulfadiazine, particularly:Respiratory tract infections associated with Streptococcus spp. and Staphylococcus aureus; Gastrointestinal infections associated with E. coli;Urogenital infections associated with beta-hemolytic streptococci; Wound infections and open or drained abscesses associated with Streptococcus spp. and Staphylococcus aureus. Active ingredient: Trimethoprim, Sulfadiazine