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Title 21: Food and Drugs
§ 522.2220 Sulfadimethoxine.

(a) Specifications. Each milliliter of solution contains:

(1) 100 milligrams (mg) of sulfadimethoxine sodium.

(2) 400 mg of sulfadimethoxine sodium.

(b) Sponsors. See sponsor numbers in § 510.600(c) of this chapter for use as in paragraph (d) of this section.

(1) No. 069043 for use of the product described in paragraph (a)(1) as in paragraph (d)(1) of this section.

(2) No. 054771 for use of the product described in paragraph (a)(2) as in paragraphs (d)(2), (3), and (4) of this section.

(3) Nos. 016592 and 061133 for use of the product described in paragraph (a)(2) as in paragraph (d)(4) of this section.

(c) Related tolerances. See § 556.640 of this chapter.

(d) Conditions of use - (1) Dogs - (i) Amount. Administer by subcutaneous, intramuscular, or intravenous injection at an initial dose of 25 mg per pound of body weight followed by 12.5 mg per pound of body weight every 24 hours thereafter. Continue treatment until the animal is free from symptoms for 48 hours.

(ii) Indications for use. For use in the treatment of sulfadimethoxine-susceptible bacterial infections in dogs.

(iii) Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

(2) Dogs and cats - (i) Amount. Administer by intravenous or subcutaneous injection at an initial dose of 55 mg per kilogram of body weight followed by 27.5 mg per kilogram of body weight every 24 hours.

(ii) Indications for use. For the treatment of respiratory, genitourinary tract, enteric, and soft tissue infections when caused by Streptococci, Staphylococci, Escherichia, Salmonella, Klebsiella, Proteus, or Shigella organisms sensitive to sulfadimethoxine, and in the treatment of canine bacterial enteritis associated with coccidiosis and canine Salmonellosis.

(iii) Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

(3) Horses - (i) Amount. Administer by intravenous injection at an initial dose of 55 mg per kilogram of body weight followed by 27.5 mg per kilogram of body weight every 24 hours until the patient is asymptomatic for 48 hours.

(ii) Indications for use. For the treatment of respiratory disease caused by Streptococcus equi (strangles).

(iii) 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.

(4) Cattle - (i) Amount. Administer an initial dose of 25 mg per pound of body weight by intravenous injection followed by 12.5 mg per pound of body weight every 24 hours until the animal is asymptomatic for 48 hours.

(ii) Indications for use. For the treatment of bovine respiratory disease complex (shipping fever complex) and bacterial pneumonia associated with Pasteurella spp. sensitive to sulfadimethoxine; necrotic pododermatitis (foot rot) and calf diphtheria caused by Fusobacterium necrophorum sensitive to sulfadimethoxine.

(iii) Limitations. Milk taken from animals during treatment and for 60 hours (5 milkings) after the latest treatment must not be used for food. Do not administer within 5 days of slaughter. A withdrawal period has not been established for this product in preruminating calves. Do not use in calves to be processed for veal.

[79 FR 16196, Mar. 25, 2014, as amended at 81 FR 22524, Apr. 18, 2016; 83 FR 48946, Sept. 28, 2018; 84 FR 8974, Mar. 13, 2019]
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