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Strepvax II

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

Strepvax II

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

Streptococcus Equi Bacterial Extract

For Veterinary Use Only

Strepvax II Indications

For use in healthy horses of all ages as an aid in the prevention of disease (strangles) due to Streptococcus equi infection.

Administration and Dosage: Shake well. Using aseptic technique, inject 1 mL intramuscularly preferably in the hind quarters. For primary vaccination give 3 doses at intervals of 3 weeks. Foals vaccinated when less than 3 months of age should receive an additional dose at 6 months. Revaccinate annually and prior to anticipated exposure, using a single 1 mL dose. Use a separate needle for each injection.

Strepvax II Caution

Store at 35°-45°F (2°-7°C). Protect from freezing. Use entire contents when first opened.

Field reports suggest that certain hypersensitive individuals may demonstrate local or generalized reactions, sometimes severe, following exposure to streptococcal proteins. Field studies indicate that postvaccinal exercise will appreciably decrease the incidence and duration of reactions. Do not vaccinate within 21 days before slaughter.

Anaphylactoid reactions may occur following use.

Antidote: Epinephrine.


Strepvax® II is a concentrated, aluminum hydroxide - absorbed suspension of purified antigens derived from S. equi cells. Strepvax II contains the antigenic protein of S. equi but is essentially free of the toxic and irritant substances present in whole cell bacterins.

Actions and Uses: Strepvax II has been observed to decrease the incidence and severity of strangles in controlled efficacy studies as well as under field conditions. When its use is combined with good hygiene and the segregation of affected individuals, Strepvax II will help to limit the occurrence of clinical disease and to minimize sequelae.

Boehringer Ingelheim Vetmedica, Inc., St. Joseph, MO 64506 U.S.A.

U.S. Veterinary License No. 124




1 Dose/1 mL



10 Doses/10 mL


31703-02, 31704-03

CPN: 1028102.2

Telephone:   800-325-9167
Fax:   816-236-2717
Every effort has been made to ensure the accuracy of the Strepvax II 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.

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