Dual Protection Bolus/Gel

Dual Force

First Defense® Bolus and Dual-Force® Gel Tube for Calf Scours Prevention

An immediate guaranteed dose of immunity against E. coli and coronavirus infections, in a bolus or single-dose gel tube.

Instantly deliver the passive antibodies newborn calves need to prevent scours. Jump straight to antibody protection while removing reliance on the common variable vaccine response of dam- and calf-level vaccines. One dose, a single bolus or gel tube, administered at birth gives each calf a guaranteed level of protection from E. coli and coronavirus infections.

Dual Force Bolus Gel

Approved by the USDA Veterinary Center for Biologics

First Defense bolus and Dual-Force gel tube are approved by the USDA Veterinary Center for Biologics, the same agency that approves scours vaccines.

Learn more about First Defense bolus and Dual-Force gel tube

Reach My Rep

Easy to Administer

The First Defense bolus can be easily administered with a balling gun. Our Dual-Force gel contains a non-digestible blue dye that serves as a marker, turning your calf’s first stool after administration a neon blue-green to help confirm proper administration.

Top 7 Things People Ask

FREQUENTLY ASKED QUESTIONS

Watch our sales and marketing team answer the seven questions we get asked the most.

Top 7 Things People Ask
“We have been using First Defense for the last 3 to 4 years and are really happy with the product. For us it’s important, it’s a big investment and a huge return. The product is convenient and versatile. Knowing we have protection as soon as the calf hits the ground is satisfying and comforting. This product gives assurance.”
– Dan Kullot, DVM, Syracuse Dairy, Syracuse, KS
Dan Kullot
  • Pathogen PreventionPathogen Prevention
  • E.ColiE.Coli
  • CoronavirusCoronavirus
  • RotavirusRotavirus
  • Approved UseApproved Use
  • USDAUSDA
  • OMRI/OrganicOMRI/Organic
  • TraceabilityTraceability
  • StorageStorage
  • ShelfShelf
  • RefrigerateRefrigerate

  • First Defense® Bolus
    5 or 30 Dose

  • Pathogen Prevention
  • E.Coli
  • Coronavirus
  • Rotavirus
  • Approved Use
  • USDA
  • OMRI/Organic
  • Traceability
  • Storage
  • Shelf
  • Refrigerate

  • First Defense
    Technology®
    90-Dose Bulk Powder

  • Pathogen Prevention
  • E.Coli
  • Coronavirus
  • Rotavirus
  • Approved Use
  • USDA
  • OMRI/Organic
  • Traceability
  • Storage
  • Shelf
  • Refrigerate

  • Dual-Force
    First Defense®
    Single-Dose Gel Tube

  • Pathogen Prevention
  • E.Coli
  • Coronavirus
  • Rotavirus
  • Approved Use
  • USDA
  • OMRI/Organic
  • Traceability
  • Storage
  • Shelf
  • Refrigerate

  • Tri-Shield
    First Defense®
    Single-Dose Gel Tube

  • Pathogen Prevention
  • E.Coli
  • Coronavirus
  • Rotavirus
  • Approved Use
  • USDA
  • OMRI/Organic
  • Traceability
  • Storage
  • Shelf
  • Refrigerate