HORSE SULFAMETHAZINE (PO) RESOURCES Wilson, R. C., Hammond, L. S., Clark, C. H., & Ravis, W. R. (1989). Bioavailability and pharmacokinetics of sulfamethazine in the pony. Journal of Veterinary Pharmacology and Therapeutics, 12(1), 99–102. https://doi.org/10.1111/j.1365-2885.1989.tb00647.x