21 CFR 520.1720c
§ 520.1720c Phenylbutazone paste.
United States · 21 CFR — Food and Drugs · Status: effective
Cite this
- Citation
- 21 CFR 520.1720c, § 520.1720c Phenylbutazone paste, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/87268
- Permanent ID
ys:prov:87268@1- SHA-256
503b606f0e692dd0baca7f5ebb05fd0b5b091c01625fb2a9e2c639ed1119352e
The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.
Full text
(a) Specifications.
(1) Each gram of paste contains 0.2 grams phenylbutazone.
(2) Each gram of paste contains 0.35 grams phenylbutazone.
(b) Sponsors. See sponsor numbers in § 510.600(c) of this chapter.
(1) No. 000061 for use of product described in paragraph (a)(1) of this section.
(2) No. 017030 for use of product described in paragraph (a)(2) of this section.
(c) Conditions of use in horses—(1) Amount. 1 to 2 grams of phenylbutazone per 500 pounds of body weight, not to exceed 4 grams daily.
(2) Indications for use. For relief of inflammatory conditions associated with the musculoskeletal system.
(3) Limitations. Do not use in horses intended for human consumption. Federal law prohibits the use of this drug in female dairy cattle 20 months of age or older. 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.