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First Defense Bolus

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Prepared from hyperimmune bovine colostrum, First Defense is a bolus which dissolves readily upon reaching the calf's stomach, providing protective levels of antibodies to potential sites of intestinal infection. These highly specific antibodies serve to block enterotoxigenic E. coli adherence and interfere with coronavirus infection of intestinal epithelial cells, thereby reducing scours related morbidity and mortality.

Availability: In stock

SKU Product Name Part Unit Of Measure Qty Price Add to Favorites
339 First Defense Bolus Bolus
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1705 First Defense Balling Gun Balling Gun
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Features & Specifications



  • Immediate protection when calves need it most


  • Give capsule orally within first 12 hours after birth
  • For proper delivery, use a correct-fitting dosing gun

Additional Information

Additional Information

Name First Defense Bolus
Manuals & Resources Product Label


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