Chlortetracycline and sulfamethazine.

21 C.F.R. § 558.140
in effectEffective: 2024-07-01
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(a) Specifications. Type A medicated articles containing: (1) 35 grams (g) per pound (/lb) each, chlortetracycline and sulfamethazine. (2) 40 g/lb each, chlortetracycline and sulfamethazine. (b) Sponsors. See sponsors in § 510.600(c) of this chapter as follows: (1) No. 054771 for use of product described in paragraph (a)(1) as in paragraph (e)(1) of this section. (2) No. 069254 for use of product described in paragraph (a)(1) as in paragraph (e)(1)(i) of this section. (3) Nos. 054771 and 069254 for use of product described in paragraph (a)(2) as in paragraph (e)(2) of this section. (c) Related tolerances. See §§ 556.150 and 556.670 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 chlortetracycline and sulfamethazine medicated feeds must not exceed 6 months from the date of issuance. VFDs for chlortetracycline and sulfamethazine shall not be refilled. (e) Conditions of use—(1) Cattle— (2) Swine—

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