Section 520.903b - Febantel suspension(a)Specifications. Each ounce of suspension contains 2.75 grams (9.3 percent ounce) febantel.(b)Sponsor. See No. 058198 in § 510.600(c) of this chapter.(c)Conditions of use in horses -(1)Amount. 3 milliliters per 100 pounds body weight or 1 fluid ounce per 1000 pounds (6 milligrams per kilogram body weight). Administer by stomach tube or drench, or by mixing well into a portion of the normal grain ration. For animals maintained on premises where reinfection is likely to occur, retreatment may be necessary. For most effective results, retreat in 6 to 8 weeks.(2)Indications for use. For removal of ascarids (Parascaris equorum-adult and sexually immature), pinworms (Oxyuris equi-adult and 4th stage larvae), large strongyles (Strongylus vulgaris, S. edentatus,S. equinus), and various small strongyles in horses, breeding stallions and mares, pregnant mares, foals, and ponies.(3)Limitations. Do not use in horses intended for human consumption. Federal law restricts this drug to use by or on the order of a licensed veterinarian.(d)Special considerations. Febantel suspension may be used in combination with trichlorfon oral liquid in accordance with the provisions of § 520.2520c , this section, and the following conditions: (1) Combine 1 part febantel suspension with 5 parts trichlorfon liquid.(2) Allow animal to consume a portion of daily grain ration; administer mixture by stomach tube at rate of 18 milliliters per 100 pounds of body weight.45 FR 8587, Feb. 8, 1980, as amended at 79 FR 28821, May 20, 2014; 86 FR 14818, Mar. 19, 2021