Indications: IMPROVAC® is a vaccine for use in male pigs to control boar taint and provides an animal-friendly alternative to physical castration.

Before Use Of IMPROVAC


Below you will find details of the prescribing information:



Key benefits of not castrating:

  • Improved feed conversion rate
  • Improved carcass yield (less fat, more lean meat)
  • Improved health (less mortality and infections)
  • Natural boar growth patterns
  • Potential for substantial return on investment
  • Same high eating quality as castrated pigs and gilts (no boar taint odours or taste)
  • Animal-friendly (elimination of complications or stress associated with physical castration)
  • Reduced environmental impact (less waste, less nitrogen and phosphorus, and reduced carbon footprint)

Back to top


IMPROVAC is not recommended for use in breeding stock. Fertility of male breeding stock may be affected if inadvertent administration of more than one dose occurs.


  • 100 mL (50-dose) and 500 mL (250-dose) vials

Dosage and administration:

  • 2 mL subcutaneous injection is given at the base of the ear
  • Two doses must be given at least 4 weeks apart, with the second dose given 4–5 weeks prior to the anticipated time of slaughter.
  • In the case of pigs kept longer than 7–8 weeks after the second dose, GnRF antibodies may decline below effective levels, allowing return of testicular function and risk of boar taint accumulation.

Back to top


  • Protect from light
  • Do not freeze
  • Store at 2—8°C (35°—46°F)


Shelf life:

  • 2 years from date of release

Back to top

Withholding time:

  • Nil

Product Infill

Every effort has been made to ensure the accuracy of the information published. However, it remains the responsibility of the readers to familiarise themselves with the product information contained on the product label or package leaflet.

Back to top