Sulfaquinoxaline.
21 C.F.R. § 558.586
in effectEffective: 2024-07-01(a) Specifications. Type A medicated articles containing 40 percent sulfaquinoxaline.
(b) Sponsor. See No. 016592 in § 510.600(c) of this chapter.
(c) Related tolerances. See § 556.685 of this chapter.
(d) Special considerations. (1) Federal law restricts medicated feed containing this veterinary feed directive (VFD) drug to use by or on the order of a licensed veterinarian. See § 558.6 for additional requirements.
(2) The expiration date of VFDs for sulfaquinoxaline medicated feeds must not exceed 6 months from the date of issuance. VFDs for sulfaquinoxaline shall not be refilled.
(e) Conditions of use—(1) Chickens—
(2) Turkeys—
(3) Rabbits—
Source: eCFRURL: https://www.ecfr.gov/api/versioner/v1/full/2024-07-01/title-21.xmlFetched: 7/26/2026
