Veterinary APIs Drug Oxytetracycline hydrochloride is a broad-spectrum antibiotic, and its antibacterial spectrum, antibacterial principle and application are basically the same as tetracycline. Many rickettsial genus, mycoplasma, chlamydia, spirochetes, amoeba and some malaria parasites are also sensitive to this product. Enterococcus is resistant to it. Others such as actinomycetes, anthracis, Listeria monocytogenes, Clostridium, Nocardia, Vibrio, Brucella, Campylobacter, Yersinia, etc. are sensitive to this product. This product has certain antibacterial activity against gonococci and meningococci, but penicillin-resistant gonococci are also resistant to oxytetracycline. Over the years, due to the wide application of tetracyclines, common clinical pathogenic bacteria have serious resistance to oxytetracycline, including gram-positive bacteria such as staphylococcus and most gram-negative bacilli. Besides being used for preventing bacterial growth in cats and dogs, Oxytetracycline HCl is effective for the treatment of bacterial enteritis and bacterial pneumonia in pigs, cows, sheep, chicken, turkey, and even honey bees.