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 Code of Federal Regulations (Last Updated: November 8, 2024)
 Title 21 - Food and Drugs
 Chapter I - Food and Drug Administration, Department of Health and Human Services
 SubChapter E - Animal Drugs, Feeds, and Related Products
 Part 520 - Oral Dosage Form New Animal Drugs

  § 520.522 - Cyclosporine.  

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  • § 520.522 Cyclosporine.

    (a) Specifications.

    (1) Each cyclosporine capsule, USP (MODIFIED) contains 10, 25, 50, or 100 milligrams (mg) cyclosporine.

    (2) Each milliliter of cyclosporine oral solution, USP (MODIFIED) contains 100 mg cyclosporine.

    (b) Sponsors. See sponsors in § 510.600(c) of this chapter.

    (1) No. 058198 for use of products described in paragraph (a) as in paragraph (d) of this section.

    (2) No. 026637 017033 for use of product described in paragraph (a)(1) as in paragraph (d)(1) of this section.

    (3) No. 051311 for use of product described in paragraph (a)(2) of this section as in paragraph (d)(1) of this section.

    (c) [Reserved]

    (d) Conditions of use -

    (1) Dogs. Use capsules described in paragraph (a)(1) of this section as follow:

    (i) Amount. Administer 5 mg per kilogram (mg/kg) of body weight given orally as a single daily dose for 30 days. Following this initial daily treatment period, the dosage may be tapered by decreasing the frequency of administration to every other day or two times a week, until a minimum frequency is reached which will maintain the desired therapeutic effect.

    (ii) Indications for use. For the control of atopic dermatitis in dogs weighing at least 4 pounds.

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

    (2) Cats. Use the solution described in paragraph (a)(2) of this section as follow:

    (i) Amount. Administer 7 mg/kg of body weight orally as a single daily dose for a minimum of 4 to 6 weeks or until resolution of clinical signs. Following this initial daily treatment period, the dosage may be tapered by decreasing the frequency of administration to every other day or twice weekly to maintain the desired therapeutic effect.

    (ii) Indications for use. For the control of feline allergic dermatitis in cats at least 6 months of age and weighing at least 3 pounds.

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

    [68 FR 54804, Sept. 19, 2003, as amended at 76 FR 78815, Dec. 20, 2011; 84 FR 12493, Apr. 2, 2019; 86 FR 17063, Apr. 1, 2021; 88 FR 16547, Mar. 20, 2023]