21 CFR § 524.1484g - Neomycin, thiabendazole, and dexamethasone solution.

---
identifier: "/us/cfr/t21/s524.1484g"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 524.1484g - Neomycin, thiabendazole, and dexamethasone solution."
title_number: 21
title_name: "Food and Drugs"
section_number: "524.1484g"
section_name: "Neomycin, thiabendazole, and dexamethasone solution."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "E"
subchapter_name: "ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS"
part_number: "524"
part_name: "OPHTHALMIC AND TOPICAL DOSAGE FORM NEW ANIMAL DRUGS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 360b."
regulatory_source: "40 FR 13873, Mar. 27, 1975, unless otherwise noted."
cfr_part: "524"
---


# 524.1484g Neomycin, thiabendazole, and dexamethasone solution.

(a) *Specifications.* Each milliliter of solution contains 40 milligrams (mg) thiabendazole, 3.2 mg neomycin (from neomycin sulfate), and 1 mg dexamethasone.

(b) *Sponsors.* See Nos. 000010 and 017033 in § 510.600(c) of this chapter.

(c) *Conditions of use in dogs and cats*—(1) *Amount.* In treating dermatoses affecting areas other than the ear, the surface of the lesions should be well moistened (2 to 4 drops per square inch) twice daily. In treating otitis externa, instill 5 to 15 drops in the ear twice daily. Treat for up to 7 days.

(2) *Indications for use.* As an aid in the treatment of bacterial, mycotic, and inflammatory dermatoses and otitis externa.

(3) *Limitations.* Federal law restricts this drug to use by or on the order of a licensed veterinarian.

[40 FR 13873, Mar. 27, 1975, as amended at 62 FR 63271, Nov. 28, 1997; 79 FR 10971, Feb. 27, 2014; 80 FR 61297, Oct. 13, 2015; 84 FR 39184, Aug. 9, 2019; 88 FR 16549, Mar. 20, 2023]