Section 522.144 - Arsenamide(a)Specifications. Each milliliter of solution contains 10.0 milligrams arsenamide sodium.(b)Sponsor. See No. 000010 in § 510.600(c) of this chapter.(c)Conditions of use in dogs - (1)Amount. Administer 0.1 milliliter (mL) per pound of body weight (1.0 mL for every 10 pounds) by intravenous injection twice a day for 2 days.(2)Indications for use. For the treatment and prevention of canine heartworm disease caused by Dirofilaria immitis.(3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian. 79 FR 16184 , Mar. 25, 2014, as amended at 84 FR 39183 , Aug. 9, 2019 As amended at 84 FR 39183, 8/9/2019