Pfizer Animal Health

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DEFENSOR® 3
Injectable

Description

  • DEFENSOR® 3 contains chemically inactivated rabies virus prepared from cell culture. The seed virus is a highly immunogenic, fixed strain of rabies virus that originated from Louis Pasteur’s original 1882 isolate. The inactivated virus is formulated with a highly purified adjuvant and is packaged in liquid form. Following primary vaccination, DEFENSOR 3 is approved for revaccination of dogs every 3 years with a single dose.


  • DEFENSOR 3 produced for sale in California meets specific potency standards required by that state.
Approved Uses

DEFENSOR 3 is approved for:
  • Vaccination of healthy dogs 3 months of age or older as an aid in preventing rabies.
Key Features

  • DEFENSOR 3 is exceptionally well-tolerated after injection, due to a purified adjuvant and a novel dual-buffering system that restricts pH to a narrow, safe range.


  • Studies conducted in mice to evaluate the relative effective dose of DEFENSOR 3 versus a CDC reference virus against 5 wild rabies viruses indicated that vaccine effectiveness extends beyond canine isolates to include naturally occurring wildlife strains, with protection against raccoon and bat rabies virus isolates.


  • Customer-friendly packaging using recycled materials includes peel-off labels to make record-keeping faster and more accurate, a color-coded organizing system, and an easy-open safety band.
Packaging

50 x 1-dose vial

Dosage and Administration

  • General directions: Shake well. Aseptically administer 1 mL subcutaneously. Dogs may be vaccinated intramuscularly or subcutaneously.


  • Primary vaccination: Administer a single dose at 3 months of age or older to healthy dogs. A repeat dose should be given 1 year later.


  • Revaccination: Subsequent revaccination every 3 years with a single dose is recommended.
Precautions

  • Store at 2°– 7° C. Prolonged exposure to higher temperature may adversely affect potency. Do not freeze. Use entire contents when first opened. Sterilized syringes and needles should be used to administer this vaccine. Burn containers and all unused contents.


  • As with many vaccines, anaphylaxis may occur after use. Initial antidote of epinephrine is recommended and should be followed with appropriate supportive therapy.


  • DEFENSOR 3 has been shown to be efficacious in healthy animals. A protective immune response may not develop if animals are incubating an infectious disease, are malnourished or parasitized, are stressed due to shipment or environmental conditions, are otherwise immunocompromised, or if the vaccine is not administered according to label directions.


  • For veterinary use only.

Product Information
Material Safety Data Sheet

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The product information provided in this site is intended only for residents of the United States. The products discussed herein may have different product labeling in different countries.

The health information contained herein is provided for educational purposes only and is not intended to replace discussions with a healthcare provider. All decisions regarding patient care must be made with a healthcare provider, considering the unique characteristics of the patient.