Melarsomine powder for injection.

(a) Specifications. The drug consists of a vial of lyophilized powder containing 50 milligrams of melarsomine dihydrochloride which is reconstituted with the provided 2 milliliters of sterile water for injection. (b) Sponsor. See Nos. 000010 and 086073 in § 510.600(c) of this chapter. (c) Conditions of use —(1) Amount. Administer only by deep intramuscular injection in the lumbar muscles (L 3 -L 5 ). (2) Indications. Treatment of stabilized, class 1, 2, and 3 heartworm disease (asymptomatic to mild, moderate, and severe, respectively) caused by immature (4 month-old, stage L 5 ) to mature adult infections of Dirofilaria immitis in dogs. (3) Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian. [60 FR 49340, Sept. 25, 1995, as amended at 79 FR 16191, Mar. 25, 2014; 82 FR 21690, May 10, 2017; 84 FR 39184, Aug. 9, 2019]