Hygromycin B.

21 C.F.R. § 558.274
in effectEffective: 2024-07-01
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(a) Specifications. Type A medicated articles containing 2.4 or 8 grams hygromycin B per pound (g/lb). (b) Sponsor. See No. 058198 in § 510.600(c) of this chapter for as follows: (c) Related tolerances. See § 556.330 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 hygromycin B medicated feeds must not exceed 6 months from the date of issuance. VFDs for hygromycin B shall not be refilled. (e) Conditions of use. It is used in feed as follows: (1) Chickens— (2) Swine—

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