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This page contains information on Bar-Guard-99 for veterinary use.
The information provided typically includes the following:
  • Bar-Guard-99 Indications
  • Warnings and cautions for Bar-Guard-99
  • Direction and dosage information for Bar-Guard-99


This treatment applies to the following species:
Manufacturer: Boehringer Ingelheim

Escherichia Coli Antibody, Equine Origin

U.S. Vet. Lic. No.: 124


BAR-GUARD-99™ is prepared from the blood of horses hyperimmunized with a whole culture of Escherichia coli, 0101:K30:K99, containing the K99 pilus antigen. Contains cresol as a preservative.

Bar-Guard-99 Indications

Uses: BAR-GUARD-99™ is recommended for the prevention of colibacillosis caused by K99 strains of Escherichia coli in neonatal calves and lambs. It is also effective when administered in the early stages of infection characterized by milk diarrhea but no dehydration or depression.

Directions For Use

Colostrum should be fed to the animal prior to administration of BAR-GUARD-99™ antibody product.


Calves: Using aseptic technique, administer 10 mL orally as soon as possible after birth. For optimal results BAR-GUARD-99™ should be administered within 12 hours after birth and preferably within 6 hours of birth. BAR-GUARD-99™ may also be administered within 8 hours of exposure, not to exceed 20 hours of age.

Lambs: Using aseptic technique, administer 2 mL orally as soon as possible after birth. BAR-GUARD-99™ should be administered within 12 hours after birth and preferably within 6 hours of birth.

Precaution(s): Store out of direct sunlight at a temperature between 35°-45°F (2°-7°C). Avoid freezing. Shake well and use immediately.

Caution(s): For oral use only. The efficacy of BAR-GUARD-99™ may be reduced if administered to calves showing signs of severe diarrhea, mild dehydration and depression. The product is not effective against diarrhea caused by infectious agents other than K99 strains of E. coli. As a good management practice, colostrum should be administered to calves and lambs as soon as possible after birth. Anaphylactoid reactions may occur.

Antidote(s): Epinephrine.

Warning(s): Do not administer within 21 day of slaughter.

BI 1081-1 4/00

Presentation: 1 dose (10 mL) syringe and 5 dose (50 mL) vials.

NAC No.: 10280121

Telephone:   800-325-9167
Fax:   816-236-2717
Every effort has been made to ensure the accuracy of the Bar-Guard-99 information published above. However, it remains the responsibility of the readers to familiarize themselves with the product information contained on the US product label or package insert.

Copyright © 2018 Animalytix LLC. Updated: 2018-10-31