Equine PotomavacTM

Neorickettsia Risticii Bacterin


  • EQUINE POTOMAVAC vaccine to aid in the prevention of Potomac Horse Fever

  • Available monovalent or in combination with Rabies vaccine

  • It has been shown to be effective for the vaccination of healthy horses 3 months of age or older against Potomac Horse Fever (equine monocytic ehrlichiosis) due to Neorickettsia risticii.

  • Liquid suspension of inactivated Neorickettsia risticii

Features & Benefits


  • Convenience and ease of use


  • The safety and efficacy of this product have been demonstrated in controlled vaccination challenge tests and in thorough field evaluations

  • Safe for use for healthy horses, 3 months of age or older

Dosage & Administration

Shake well before use. Aseptically inject 1 mL (1 dose) intramuscularly (IM) into healthy horses 3 months of age or older.


Revaccinate with a second 1mL dose intramuscularly 3-4 weeks later.


Revaccinate annually or prior to anticipated exposure.

Safety Information

  • Store at 35-46°F (2-8°C)

  • Do not freeze

  • Do not mix with other products

  • Use entire contents when first opened

  • Shake well before using

  • Do not vaccinate within 21 days before slaughter

  • Contains gentamicin and thimerosal as preservatives

In rare instances, administration of vaccines may cause lethargy, fever, and inflammatory or hypersensitivity types of reactions. Treatment may include antihistamines, anti-inflammatories, and/or epinephrine. Vaccinating animals whose immune response is compromised by stress, disease, etc. may not produce the desired results. This product has not been tested in pregnant mares.




POTOMAVACTM is a trademark of Boehringer Ingelheim Animal Health USA Inc. ©2021 Boehringer Ingelheim Animal Health USA Inc., Duluth, GA. All rights reserved.