... In horses: Upper respiratory infections, strangles, peritonitis, fistula of the withers, foraling paralysis, woundinfections.phlegmon, thrush and ... Pneumonia joint infection, wound infections, bacterial enteritis.Route of administration: Oxytetracycline is administered by intramuscular and intravenous ... daily for 1 to 5 days. Generally the symptoms of efficacy are quite evidentwithin 36 to 48 hours. ...