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Somnu Shield

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

Somnu Shield

This treatment applies to the following species:
Company: Elanco US (Farm Animal)

Haemophilus Somnus Bacterin

For Use In Animals Only

Somnu Shield Indications

This product has been shown to be effective for the vaccination of healthy cattle, 3 months of age or older, against disease caused by Haemophilus somnus. The duration of immunity for this product has not been established. For more information regarding efficacy and safety, go to

This product is safe for use in pregnant animals.

ADJUVANT: Aluminum hydroxide.

Directions For Use

Shake well before using. Administer 2 mL intramuscularly or subcutaneously. In accordance with Beef Quality Assurance guidelines, the recommended route of administration is subcutaneously (under the skin) in the neck. Repeat in 2 to 3 weeks.

Historically, annual revaccination with a single dose has been recommended for this product. The need for this booster has not been established.

The presence of maternal antibody is known to interfere with the development of active immunity in calves and additional boosters will be required in most young animals. For advice on revaccination frequency, in general or in the face of maternal antibody, consultation with a veterinarian is recommended.


Store out of direct sunlight at 2 to 8°C (35 to 46°F). DO NOT FREEZE. Use entire contents when first opened. Do not mix with other products except as specified on the label. In case of human exposure, contact a physician. Do not vaccinate within 21 days prior to slaughter. Anaphylactic reactions may occur. Symptomatic treatment: Epinephrine.

VLN/PCN 196/2659.00

Elanco US, Inc., Fort Dodge, IA 50501 USA; 1-800-428-4441

Somnu Shield, Elanco and the diagonal bar logo are trademarks of Elanco or its affiliates.

50 Doses

100 mL


CPN: 1114048.8

Distributed by ELANCO US, INC.
Customer Service:   317-276-1262
Technical Service:   800-428-4441
THIS SERVICE AND DATA ARE PROVIDED "AS IS". DVMetrics assumes no liability, and each user assumes full risk, responsibility, and liability, related to its use of the DVMetrics service and data. See the Terms of Use for further details.

Copyright © 2023 Animalytix LLC. Updated: 2023-02-28