Oxytetracycline is active against a wide range of Gram-positive and Gram-negative pathogenic bacteria, certain rickettsia and the larger viruses. It is used in the treatment and control of a wide range of common systemic, respiratory, gastrointestinal, urinary and local infections caused by, or associated with, organisms sensitive to oxytetracycline. Wherever possible, the product should only be used based on susceptibility testing. Not recommended for cats, dogs, horses and donkeys.The use of the product during the period of tooth development including late pregnancy may lead to tooth discolouration. Occasional local reaction of a transient nature may occur at the site of injection.