pen strep injection is indicated for use in cattle, horses, and sheep for the treatment of infections caused by, or associated with, organisms sensitive to Penicillin and/or Streptomycin including Arcanobacterium pyogenes, Erysipelothrix rhusiopathiae, Klebsiella pneumonia, Listeria spp, Mannheimia haemolytica, Pasteurella multocida, Staphylococcus spp, Streptococcus spp, and Salmonella spp.

-Pen & Strep will therefore be effective in the treatment of infections caused by susceptible organisms including erysipelas; navel/joint ill; respiratory tract infections including pneumonia and atrophic rhinitis; listeriosis; meningitis; septicemia; toxemia associated with mastitis; urogenital tract infections; enteritis associated with Salmonella spp, salmonellosis; and the control of secondary bacterial invaders in diseases of primary viral origin.

-The combination of penicillin and dihydrostreptomycin is especially useful in the treatment of mixed infections involving both Gram-positive and Gram-negative organisms.