Immunoglobulin G (IgG)

Immunoglobulin G

The most abundant antibody class in blood and extracellular fluid, isolated here from bovine colostrum. IgG molecules bind pathogens and toxins with high specificity, supporting passive immune defense particularly at mucosal surfaces in the gastrointestinal tract.

Active Compounds

IgG Antibodies

  • Supports passive immune defense by binding to pathogens in the gut lumen*
  • Helps maintain healthy gut barrier function and intestinal integrity*
  • Supports the body's natural ability to manage microbial challenges*

*These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.

Products with Immunoglobulin G (IgG)

Colostrum Powder

Colostrum Powder

575 mg
$29.90
From the Journal

Keep reading.

Bovine Colostrum: Immunoglobulins, Growth Factors, and the Gut Barrier Compound That Isn't a Probiotic
Journal · bovine-colostrumApr 10, 2026

Bovine Colostrum: Immunoglobulins, Growth Factors, and the Gut Barrier Compound That Isn't a Probiotic

Colostrum isn't a probiotic. It doesn't contain live bacteria. What it contains — immunoglobulins, lactoferrin, and growth factors — operates through mechanisms that are fundamentally different from anything in the probiotic category, and arguably more relevant to the modern gut-barrier problem.

Read article→

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Tanner, Chief Mushroom Officer

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