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


This treatment applies to the following species:
Company: Zoetis

Haemophilus Somnus Bacterin

U.S. Vet. Lic. No.: 190

Contents: SOMUBAC® consists of inactivated, standardized cultures of Haemophilus somnus, adjuvanted with aluminum hydroxide.

Somubac Indications

For vaccination of healthy cattle and calves as an aid in preventing disease caused by Haemophilus somnus.

Directions For Use

Shake well before using. Administer a single 2-mL dose subcutaneously to healthy cattle 3 months of age or older, followed by a second dose 2-4 weeks later. In accordance with Beef Quality Assurance guidelines, this product should be administered subcutaneously (SC) under the skin. Annual revaccination with a single dose is recommended.

Precaution(s): Store at 2°-7°C. Do not freeze. Use entire contents when first opened. Sterilized syringes and needles should be used to administer this vaccine.

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

Warning(s): Do not vaccinate within 21 days before slaughter.

For veterinary use only.


Presentation: 10 dose (20 mL) and 50 dose (100 mL) vials.

CPN: 36900222

Telephone:   269-359-4414
Customer Service:   888-963-8471
Every effort has been made to ensure the accuracy of the Somubac 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 © 2021 Animalytix LLC. Updated: 2020-12-31