The Library · Vol. 01Entry No. 74· Chapter 07

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.

1
Active compounds
1
In our products
07
Superfoods
Immunoglobulin G (IgG) (Immunoglobulin G)

Immunoglobulin GBotanical illustration

§ 1The molecules

Active compounds.

1 compound · 3 statements

No.01

IgG Antibodies

Why this matters

  • № 01Supports passive immune defense by binding to pathogens in the gut lumen*
  • № 02Helps maintain healthy gut barrier function and intestinal integrity*
  • № 03Supports 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.

§ 3Where it lives

Find Immunoglobulin G (IgG) in

1 product

Colostrum Powder
Colostrum Powder
575 mg
$22.42$29.90
From the Library · Vol. 01

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125Ingredients
189Compounds
14Chapters
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A cross-section of the library — six chapters in view, plus eight more inside.Showing 12 · Browse all 125 →
Lion's Mane Mushroom
№ 01 · CH.01

Lion's Mane Mushroom

Hericium erinaceus

A distinctive white, shaggy mushroom used for centuries in traditional Chinese medicine.

HericenonesErinacinesβ-(1→3)(1→6)-glucan
Reishi Mushroom
№ 02 · CH.01

Reishi Mushroom

Ganoderma lucidum

Known as the 'mushroom of immortality' in traditional Chinese medicine, Reishi has been used for over 2,000 years to support longevity and overall wellness.

Ganoderic acidsβ-(1→3)(1→6)-glucanPolysaccharides
Ashwagandha
№ 11 · CH.02

Ashwagandha

Withania somnifera

One of the most important herbs in Ayurvedic medicine, used for over 3,000 years.

WithanolidesWithaferin ASitoindosides
Rhodiola Rosea
№ 12 · CH.02

Rhodiola Rosea

Rhodiola rosea

A powerful adaptogen that grows in cold, mountainous regions of Europe and Asia.

RosavinsSalidroside
Bacopa
№ 17 · CH.03

Bacopa

Bacopa monnieri

An ancient Ayurvedic herb known as 'Brahmi', used for thousands of years to enhance memory and learning.

Bacosides
Chinese Club Moss
№ 18 · CH.03

Chinese Club Moss

Huperzia serrata

A primitive, slow-growing moss native to mountain forests of China and Southeast Asia, used in Traditional Chinese Medicine for centuries.

Huperzine A
Bee Bread
№ 19 · CH.04

Bee Bread

Fermented Bee Pollen

Bee bread is pollen that has been fermented by bees using honey and their own enzymes.

Digestive EnzymesAmino Acids
Royal Jelly
№ 20 · CH.04

Royal Jelly

Apis mellifera secretion

The exclusive food of queen bees, who live 40x longer than worker bees.

10-Hydroxy-2-decenoic acidRoyalactin
Valerian Root
№ 22 · CH.05

Valerian Root

Valeriana officinalis

A flowering plant native to Europe and Asia, Valerian has been used since ancient Greece and Rome to promote relaxation and restful sleep.

Valerenic AcidIsovaleric Acid
Lavender
№ 23 · CH.05

Lavender

Lavandula angustifolia

A fragrant herb used for thousands of years to promote relaxation and sleep.

LinaloolLinalyl Acetate
Horsetail Extract
№ 30 · CH.06

Horsetail Extract

Equisetum arvense

An ancient plant dating back to prehistoric times, Horsetail is one of the richest natural sources of silica.

Silicon Dioxide
Fo-Ti
№ 31 · CH.06

Fo-Ti

Polygonum multiflorum

A revered herb in Traditional Chinese Medicine, known as 'He Shou Wu' meaning 'black-haired Mr.

StilbenesAnthraquinones

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From the Journal

Keep reading.

Journal · bovine-colostrum
Apr 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→

— End of entry

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