Animal & Veterinary

ANADA 200-108 Dexamethasone Solution - original approval

Approval Date: April 13, 1995





Phoenix Pharmaceuticals, Inc.
4621 Easton Road
P. O. Box 6457-Fairleigh Station
St. Joseph, Missouri 64506-0457

Generic Name:

Dexamethasone Solution

Trade Name:

Dexamethasone Solution

Marketing Status:



Under the provisions of the Federal Food, Drug, and Cosmetic Act, as amended by the Generic Animal Drug and Patent Term Restoration Act, (53 FR 50460, December 15, 1988, First GADPTRA Policy Letter) an abbreviated new animal drug application (ANADA) may be submitted for a generic version of an approved new animal drug (pioneer product).  New target animal safety data, drug effectiveness data, and human food safety data (other than tissue residue data) are not required for approval of an ANADA.  An ANADA relies on the target animal safety, drug effectiveness, and human food safety data in the pioneer's new animal drug application.  Ordinarily, the ANADA sponsor shows that the generic product is bioequivalent to the pioneer.  If bioequivalence is demonstrated through a clinical end-point study, then a tissue residue study to establish the withdrawal time for the generic product is also required. For certain dosage forms, the agency will grant a waiver from conducting an in vivo bioequivalence study (55 FR 24645, June 18, 1990; Fifth GADPTRA Policy Letter; Bioequivalence Guideline, April 1990).

Based upon the formulation characteristics of the generic product, Phoenix Pharmaceutical, Inc. was granted a waiver from conducting an in vivo bioequivalence study for DEXAMETHASONE SOLUTION.  The generic and pioneer products contain the same active and inactive ingredients and are administered as injectable solutions. 


There is no withdrawal period associated with this or the pioneer product, therefore no human safety data pertaining to residues in food was required. A 24 hour expiry is assigned to this generic product.


This ANADA submitted under section 512(b) of the Federal Food, Drug, and Cosmetic Act satisfies the requirements of section 512(n) of the act and demonstrates that DEXAMETHASONE SOLUTION when used under the proposed conditions of use, is safe and effective for its labeled indications.

Attachments: The following generic labeling and currently approved pioneer labeling are attached.

Generic labels:

  1. Phoenix regular and enlarged 100 mL vial label.
  2. Phoenix package insert for vials (two pages).

Pioneer labels:

  1. Schering enlarged 100 mL vial label.
  2. Schering package insert for vials.


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