Animal & Veterinary

ANADA 200-042 Ketaject® - original approval

Approval Date: June 30, 1994





Phoenix Pharmaceutical, Inc.
3336 Pear Street
P.O. Box 7 Farleigh Station
St. Joseph, MO 64506

Generic Name:

ketamine hydrochloride injection, USP

Trade Name:


Marketing Status:


Amount of Active Ingredients:

Each mL contains ketamine hydrochloride equivalent to 100 mg ketamine base

Route of Administration: Intramuscular injection

Species: Cats and subhuman primates

Labeled Dosage:

  • Cats:
    A dose of 11 mg/kg (5mg/lb) is recommended to produce restraint. Dosages from 22 to 33 mg/kg (10 to 15 mg/lb) produce anesthesia that is suitable for diagnostic or minor surgical procedures that do not require skeletal muscle relaxation.
  • Subhuman primates:
    The recommended restraint dosages for the following species are: Cercocebus torquatus (white-collared mangabey), Papio cynocephalus (yellow baboon), Pan troglodytes verus (chimpanzee), Papio anubis (olive baboon), Pongo pygmaeus (orangutan), Macaca nemestrina (pig-tailed macaque), 5 to 7.5 mg/kg; Presbytis entellus (entellus langur), 3 to 5 mg/kg; Gorilla gorilla gorilla (gorilla), 7 to 10 mg/kg; Aotus trivirgatus (night monkey), 10 to 12 mg/kg; Macaca mulatta (rhesus monkey), 5 to 10 mg/kg; Cebus capucinus (white-throated capuchin), 13 to 15 mg/kg; Macaca fascicularis (crab-eating macaque), Macaca radiata (bonnet macaque), and Saimiri sciureus (squirrel monkey) 12 to 15 mg/kg.
  • Indications for Use:
    Ketaject® (ketamine hydrochloride injection. USP) may be used in cats for restraint or as the sole anesthetic agent for diagnostic or minor brief, surgical procedures that do not require skeletal muscle relaxation. It may be used in subhuman primates for restraint.
  • Pioneer Product :
    Vetalar® /Ketaset® (ketamine hydrochloride injection, USP. 100 mg/mL), NADA 045-290 by Fort Dodge Laboratories, Inc.
  • Date of Approval: June 30, 1994


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). For certain dosage forms, the Agency grants a waiver from conducting an in vivo bioequivalence study (55 FR 24645, June 18, 1990; fifth GADPTRA Policy Letter). In lieu of bioequivalence testing, the safety and efficacy of the generic product are based on the demonstrated chemical equivalence to the pioneer product.

Based on the formulation characteristics of the generic product, Phoenix Pharmaceutical, Inc. was granted a waiver July 19, 1990 (see Section 4) from conducting an in vivo bioequivalence study with Ketaject®. The generic and pioneer products are solutions with the same inactive ingredients and the same concentrations of the active ingredient.


Human Safety Relative to Food Consumption:
Regarding consumption of drug residues in food, human safety data were not required for approval of this ANADA. This drug is labeled for use in cats and subhuman primates not intended for food.

Human Safety Relative to Possession, Handling and Administration:
Labeling contains adequate caution/warning statements.


INAD 6752(A000)
James H. Schafer, D.V.M.
Consultant to the Veterinary
Pharmaceutical Industry
800 Helena Ct.
Ft. Collins, Colorado 80524

Dear Dr. Schafer,

We refer to your submission dated April 9, 1990, requesting an Investigational Exemption for a generic copy of Ketaset (ketamine hydrochloride injection) for intramuscular use in cats as an anesthetic and restraining agent and in subhuman primates as a reastraining agent. The Submission also contained a request for a waiver of in vivo bioequivalence testing required for an Abbreviated New Animal Drug Application (ANADA).

Based on the information you provided, your proposed product is a solution containing the same active and inactive ingredients as the pioneer product. It is inteded solely for intramuscular injection. It is, therefore, eligible for waiver from in vivo bioequivalence testing under our current policy.

Your request for a waiver is granted on the condition that the full information presented in your ANADA continues to show that your proposed generic product is chemically equivalent to the pioneer product. If it is not shown to be chemically equivalent, in vivo bioequivalence testing could be required.

Granting of this waiver does not assure approval of your ANADA. All necessary requirements must be fulfilled, including certification that your product or its proposed uses do not violate or infringe upon any patent or exclusivity for the pioneer product or its uses.

For administrative purposes, we have assigned you Investigational New Animal Drug (INAD) number 6752 for the above referenced use of ketamine hydrochloride. In submitting your ANADA, please refer to this number and include a copy of this correspondence in your original submission. All future correspondence pertaining to his drug should be sent to the following:

Dr. Marcia K. Larkins
Division of Drugs for Non-Food Animals
HFV-112, Room 6B-24
Center for Veterinary Medicine
Food and Drug Administration
5600 Fishers Lane
Rockville, MD 20857

Should you have questions or need further assistance, please contact Dr. Marcia K. Larkins, Chief for Companion & Wildlife Drugs Branch. The telephone number is (301) 443-3430.

Sincerely yours,

Bob G. Griffith, DVM
Director, Division of Drugs
for Non-Food Animals
New Animal Drug Evaluation
Center for Veterinary Medicine


This is an Abbreviated New Animal Drug Application (ANADA) filed under Section 512(b)(2) of the Federal, Food, Drug and Cosmetic (FFD&C) Act.

Safety and effectiveness for this generic animal drug, Ketaject® (ketamine hydrochloride, USP, 100 mg/mL), were established by demonstration of chemical equivalence to the pioneer product, Fort Dodge Laboratories' Vetalar®/Ketaset® (ketamine hydrochloride, USP,100 mg/mL. NADA 045-290).

This generic product and the pioneer product have identical labeling indications for use. The route and method of administration of the two drugs are identical. Both drugs are administered by intramuscular injection. The generic and pioneer products are both solutions that contain the same active and inactive ingredients in the same concentrations. Both products have the same pH. Therefore, in compliance with FDA policy promulgated to implement Section 512(b)(2) of the FFD&C Act, no additional safety, efficacy, or in vivo bioequivalency studies were necessary or required.

This ANADA satisfies the requirements of section 512 of the Act and demonstrates that Ketaject® is safe and effective for its labeled indications when used under its proposed conditions of use.


Copy of waiver letter.

Generic Labeling:

  • Bottle Label
  • Package Insert
  • 25 X 10 mL Box Label
  • 4 X 25 - 10 mL Shipper Carton Label:

Pioneer Labeling:

  • Bottle Label
  • Individual Bottle Carton
  • Package Insert
  • 6 X 10 mL Box Label

Copies of these labels may be obtained by writing to the:

Freedom of Information Office
Center for Veterinary Medicine, FDA
7500 Standish Place
Rockville, MD 20855

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