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The foundation of health starts in the gut. Clinical studies show bovine colostrum supports intestinal barrier integrity and overall gut health.
Our colostrum is sourced from pasture-raised, free-range cows from New Zealand’s Southern Alps. Each batch is gently processed to help preserve naturally occurring Immunoglobulin G. Independently tested 20% IgG+.
We choose colostrum that is responsibly collected, tested for quality, and made without unnecessary extras. No additives, no fillers, no preservatives. Just a premium whole food ingredient, treated with the care it deserves.
Colostrum is the very first nourishment mammals produce after giving birth, before regular milk comes in. It’s made for a short window of time, when newborns need concentrated nutrition and immune support most. That’s what makes colostrum so special. It’s a naturally nutrient-rich whole food, containing a unique mix of bioactive compounds, including:
IgG (Immunoglobulin G) is a naturally occurring antibody found in colostrum.
It’s one of the key bioactive compounds in bovine colostrum and is commonly used as a quality marker.
“20%+ IgG” means the colostrum contains at least 20% immunoglobulin G by composition.
Chief Colostrum typically tests around 21.9% IgG.
The gut lining acts like a protective barrier, helping absorb nutrients while keeping unwanted particles, microbes and toxins out of the bloodstream. When this barrier is under stress, it can become more permeable, which is why supporting intestinal barrier integrity is a key part of overall gut health.
Bovine colostrum contains naturally occurring compounds such as immunoglobulins, lactoferrin and growth factors, which may help support the gut lining and digestive resilience. Clinical research, particularly in athletes and people with increased intestinal permeability, suggests bovine colostrum supplementation can help reduce gut permeability and support barrier function.
Our recommended serving size is 1 scoop (3 g) daily.
Consistency matters more than timing. Many people prefer taking it:
You can have it with cold water or add to your smoothies, yoghurt, etc.
We generally recommend avoiding very hot liquids. Excessive heat may affect some naturally occurring bioactive compounds in colostrum.
Warm drinks are generally preferred over boiling temperatures.
Some people choose to take multiple serves depending on their routine and goals. However, consistency tends to matter more than very high intakes.
Read our FAQ or chat with us
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Nature’s first nutrient-rich superfood
Before regular milk arrives, cows produce colostrum: a short-lived, nutrient-dense first food designed to nourish new life. It contains a natural matrix of bioactive compounds, including immunoglobulins like IgG, IgA and IgM, growth factors such as IGF-1 and TGF-B2, plus naturally occurring vitamins and minerals.
Clinical studies show bovine colostrum supports intestinal barrier integrity and overall gut health.
Independently tested for key immunoglobulins, including IgG, IgM and IgA.
Help feed beneficial gut bacteria and support a healthy gut microbiome.
Gently processed to help preserve naturally occurring Immunoglobulin G (20% IgG+).
Newborn calves receive the colostrum they need before any surplus is carefully harvested.
No additives, no fillers. No added hormones, rBST-free and Bovaer-free.
Colostrum is the very first nourishment mammals produce after giving birth, before regular milk comes in. It’s made for a short window of time, when newborns need concentrated nutrition and immune support most. That’s what makes colostrum so special. It’s a naturally nutrient-rich whole food, containing a unique mix of bioactive compounds, including:
Colostrum is naturally rich in immunoglobulins, including IgG, IgA and IgM. These immune proteins are a defining feature of colostrum and are found in much higher levels than in regular mature milk.
Secretory IgA is a key immunoglobulin naturally found in colostrum and in the body’s mucosal secretions, including areas such as the gut and respiratory tract.
Lactoferrin is a naturally occurring milk protein known for its ability to bind iron. It is found in greater concentrations in colostrum than in mature milk.
Colostrum contains naturally occurring growth factors, including IGF-1, IGF-2, TGF-B1 and TGF-B2. These bioactive proteins are part of what makes colostrum such a unique first food.
Bovine colostrum naturally provides prebiotic oligosaccharides, a group of complex carbohydrates that help make colostrum unique. These compounds are present in higher amounts in colostrum than in regular milk.
Proline-rich polypeptides are small chains of amino acids naturally present in colostrum. Like many of colostrum’s bioactive compounds, they are found in higher concentrations before mature milk comes in.
Our products are some of the only packaged foods actually eaten and recommended by nutritionists, dietitians and health professionals.
“One of the reasons I like bovine colostrum is that it supports two areas I care deeply about: gut health and immune resilience. It naturally contains immunoglobulins, lactoferrin and other bioactive compounds that make it a unique addition to a real-food nutrition routine.”
Veronika Larisova
Nutritionist & Exercise Physiologist
“Gut health is foundational to overall wellbeing, and bovine colostrum is one of the most interesting whole food ingredients for supporting the gut lining. I always recommend choosing one that is tested, low-heat processed and made without unnecessary additives or fillers - that's why I choose Chief.”
Laura Saunders
BHSc Nutrition & Dietetic Medicine
“For clients who want extra support for digestion, recovery and immune health, bovine colostrum is a great option. It’s naturally rich in compounds like IgG, lactoferrin and growth factors, which is why quality and sourcing matter so much.”
Fiona Agius
Nutrition Consultant
Customer Reviews
Bovine colostrum is the first nourishment cows produce after calving, before regular milk comes in. It’s naturally rich in bioactive compounds including immunoglobulins, lactoferrin, growth factors, oligosaccharides and naturally occurring vitamins and minerals.
Colostrum is produced for a short window after birth and contains higher levels of key bioactive compounds than mature milk. This includes immunoglobulins such as IgG, IgA and IgM, which are often used as markers of colostrum quality.
20% IgG+ means the colostrum has been tested to confirm it contains a high level of IgG, one of the main immunoglobulins naturally found in colostrum. IgG content is one of the key markers used to assess colostrum quality and potency.
IgG is one important quality marker, but it’s not the only thing that matters.
Overall quality also depends on:
Chief Colostrum maximises bioactivity, sourcing quality and purity.
Colostrum supports the body with naturally occurring compounds linked to gut health, immune function and digestive resilience. It contains immunoglobulins, lactoferrin, growth factors and prebiotic oligosaccharides, which help make it one of nature’s most nutrient-dense first foods.
The gut lining acts as a protective barrier, helping absorb nutrients while keeping unwanted particles out. Bovine colostrum contains naturally occurring compounds that may help support intestinal barrier integrity, digestive health and overall gut resilience.
Responsibly collected colostrum follows a calf-first approach, ensuring newborn calves receive the colostrum they need before any surplus is carefully collected for human use.
Yes. Colostrum comes from milk-producing animals, so it is considered dairy-derived. It should be avoided by anyone with a cow’s milk or dairy allergy, unless they have been advised otherwise by a healthcare professional.
We recommend checking with your healthcare professional before use, especially if you have a dairy allergy, lactose intolerance, a high-risk pregnancy, or any medical concerns.
Yes, bovine colostrum can be suitable for children as part of a healthy, balanced diet. However, because it is dairy-derived, it is not suitable for children with a dairy allergy. For young children or children with medical conditions, speak to a healthcare professional before use.
Yes, pure bovine colostrum is generally suitable for paleo, keto and carnivore-style diets. It is an animal-derived whole food ingredient and is naturally low in sugar.
Yes.
Our supplier operates under internationally recognised food safety and quality systems including:
Products are monitored for:
Bovaer is a methane-reducing feed additive used in some overseas markets.
Bovaer is not approved for general dairy use in New Zealand, and our supplier has confirmed they have no knowledge of its use within their milk supplier network.
Yes.
The raw milk undergoes pasteurisation in line with strict New Zealand food safety requirements.
The product is then gently spray-dried using low heat processing designed to help preserve naturally occurring bioactive compounds - as confirmed by testing.
Quality can vary significantly depending on:
Not all colostrum products provide the same level of bioactive compounds or traceability. In other words, you may not be getting what you're paying for.
Still have questions?
Click the chat icon on the bottom right of the screen, or visit our support area.
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