Section 520.1120a - Haloxon drench(a)Specifications. Each packet contains 141.5 grams haloxon.(b)Sponsor. See No. 000061 in § 510.600(c) of this chapter.(c)Special considerations. Do not use any drug, insecticide, pesticide, or other chemical having cholinesterase-inhibiting activity either simultaneously or within a few days before or after treatment with haloxon.(d)Related tolerances. See § 556.310 of this chapter.(e)Conditions of use in cattle - (1)Amount. Dissolve each packet in 32 fluid ounces of water and administer as follows: For animals weighing up to 100 pounds: 1/2 fluid ounce; for animals weighing 100 to 150 pounds: 3/4 fluid ounce; for animals weighing 150 to 200 pounds: 1 fluid ounce; for animals weighing 200 to 300 pounds: 11/2 fluid ounces; for animals weighing 300 to 450 pounds: 2 fluid ounces; for animals weighing 450 to 700 pounds: 3 fluid ounces; for animals weighing 700 to 1,000 pounds: 4 fluid ounces; for animals weighing 1,000 to 1,200 pounds: 5 fluid ounces; for animals weighing over 1,200 pounds: 6 fluid ounces. Retreat in 3 to 4 weeks.(2)Indications for use. For control of gastrointestinal roundworms of the genera Haemonchus, Ostertagia,Trichostrongylus, and Cooperia.(3)Limitations. Do not treat dairy animals of breeding age. Do not treat within 1 week of slaughter.40 FR 13838, Mar. 27, 1975, as amended at 45 FR 10333, Feb. 15, 1980; 46 FR 48642, Oct. 2, 1981; 61 FR 8873, Mar. 6, 1996; 62 FR 61624, Nov. 19, 1997; 78 FR 28822 , May 20, 2014