The advanced aqueous-based polymer adjuvant technology

ImpranFLEX® is a proprietary water-based adjuvant that is utilized consistently throughout the FLEX Family™ of vaccines. ImpranFLEX® improves the immune response of the vaccine within the pig, resulting in faster, long-lasting disease protection. ImpranFLEX® is found in monovalent Ingelvac CircoFLEX® and Ingelvac MycoFLEX® vaccines, as well as in the same products used in FLEXcombo® and 3FLEX®

PCA™ and ImpranFLEX®

PCA™ is the Ingelvac CircoFLEX® antigen where extraneous baculovirus from the virus-like particle (VLP) is removed, resulting in a highly refined vaccine. ImpranFLEX® is a proprietary water-based polymer adjuvant found in all FLEX Family™ vaccines. These two innovative vaccine technologies work together to generate a strong immune response and low risk of adverse reactions in vaccinated pigs.

  • Polymeric fibers form a sponge-like matrix cross-linked with PCA™
  • Free antigen immediately recognised by immune system 
  • Cross-linking of PCA™ with polymer provides slow release depot effect

Contact Information

  • Boehringer Ingelheim Vetmedica, Inc.

    Swine Division

    3902 Gene Field Road
    St. Joseph, Missouri 64506

    • Phone 866-638-2226
    • Fax 816-676-4754
    • e-mail
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Learn about the FLEX Family™ of products