Possible treatments include decoquinate, lasalocid, sulfonamides, chlortetracycline, amprolium, monensin, toltrazuril, and diclazuril. The first members of the tetracycline group to be described were chlortetracycline and oxytetracycline. Chlortetracycline may increase the anticoagulant activities of acenocoumarol. Chlortetracycline for systemic use is contraindicated in animals with severe hepatic or renal impairment. Chlortetracycline may increase the neuromuscular blocking activities of atracurium besilate. In veterinary medicine, chlortetracycline is commonly used to treat conjunctivitis in cats, dogs and horses.