21 CFR 526.464
§ 526.464 Cloxacillin benzathine.
United States · 21 CFR — Food and Drugs · Status: effective
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- Citation
- 21 CFR 526.464, § 526.464 Cloxacillin benzathine, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/87665
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Full text
(a) Specifications. Each single-dose, 7.5- or 10-milliliter syringe contains cloxacillin benzathine equivalent to 500 milligrams (mg) cloxacillin.
(b) Sponsor. See No. 000010 in § 510.600(c) of this chapter.
(c) Related tolerances. See § 556.165 of this chapter.
(d) Conditions of use in dry cows—(1) Amount. Infuse the contents of one syringe (equivalent to 500 mg cloxacillin) into each quarter immediately after last milking, but no later than 30 days before calving.
(2) Indications for use. For the treatment of mastitis caused by Staphylococcus aureus and Streptococcus agalactiae including penicillin resistant strains in dairy cows during the dry period.
(3) Limitations. Animals infused with this product must not be slaughtered for food until 30 days after the latest infusion. Federal law restricts this drug to use by or on the order of a licensed veterinarian.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.