Section 520.2134 - Spinosad and milbemycin(a)Specifications. Each chewable tablet contains 140 milligrams (mg) spinosad and 2.3 mg milbemycin oxime, 270 mg spinosad and 4.5 mg milbemycin oxime, 560 mg spinosad and 9.3 mg milbemycin oxime, 810 mg spinosad and 13.5 mg milbemycin oxime, or 1,620 mg spinosad and 27 mg milbemycin oxime.(b)Sponsor. See No. 058198 in § 510.600 of this chapter.(c)Conditions of use in dogs -(1)Amount. Administer once a month at a minimum dosage of 13.5 mg/pound (lb) (30 mg/kilogram (kg)) of body weight spinosad and 0.2 mg/lb (0.5 mg/kg) of body weight milbemycin oxime.(2)Indications for use. To kill fleas; for the prevention and treatment of flea infestations (Ctenocephalides felis); for the prevention of heartworm disease (Dirofilaria immitis); and for the treatment and control of adult hookworm (Ancylostoma caninum), adult roundworm (Toxocara canis and Toxascaris leonina), and adult whipworm (Trichuris vulpis) infections in dogs and puppies 8 weeks of age or older and 5 lbs of body weight or greater.(3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian. 76 FR 12563 , Mar. 8, 2011, as amended at 81 FR 48702 , July 26, 2016 As amended at 81 FR 48702, 7/26/2016