Respichlor is an oral powder containing 150 mg/g chlortetracycline hydrochloride. It is indicated in calves <6 months of age as an aid in the treatment of respiratory disease caused by Pasteurella sensitive to chlortetracycline. The recommended dose is 20 g per 150 kg body weight divided into twice daily doses as a top dressing on a small amount of feed for immediate consumption by individual animals.