DOG PHENETHICILLIN (PO) RESOURCES Watson, A. D., Emslie, D. R., Martin, I. C., & Egerton, J. R. (1986). Effect of ingesta on systemic availability of penicillins administered orally in dogs. Journal of Veterinary Pharmacology and Therapeutics, 9(2), 140–149. https://doi.org/10.1111/j.1365-2885.1986.tb00023.x