Trimethoprim sufamethoxazole (sulfa)

Other Names: 
Primsol, Trimpex, Proloprim, Bactrim, Septra, tribrissen, cotrum, sulfatrim
Use: 
Trimethoprim sufamethoxazole (sulfa) is a broad spectrum antibiotic with excellent activity against most gram negative organisms, Staphylococci infections, pneumonia, and other bacterial infections in horses.

Dosage: 15-30 mg/kg, PO, q12h, 21.3 mg/kg, IV, q24h