Defend
When you’re eating far less, your body still has to defend itself — and much of that work happens at the gut wall, where most of your immune system lives. Defend is immunoglobulin-rich bovine colostrum, the first milk a cow makes for its newborn, delivering naturally occurring IgG immunoglobulins and lactoferrin that help maintain a healthy immune system and support the lining of your gut.* One unflavored scoop, stirred into water.
*These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. Defend is a dietary supplement, not a treatment for any medication or condition.
Eating this much less asks a lot of the system that keeps you well.
On a GLP-1, appetite drops and meals shrink. That’s the point — and it’s working. But eating far less also means fewer of the raw materials your body draws on to keep its defenses staffed and its gut wall in good repair. Defend answers with immunoglobulin-rich bovine colostrum: the concentrated first milk nature designed to prime a newborn’s immune system and gut, delivering immunoglobulins, lactoferrin and growth factors your everyday plate no longer provides in the same amount.* It’s a way to keep supporting your defenses while your appetite — and your diet — goes through the biggest change of its life.
How Defend supports your immune system & gut lining.
Antibody proteins, concentrated
Colostrum is naturally rich in immunoglobulins (IgG) — the antibody proteins that are a core part of the body’s immune defense. It’s the reason colostrum is nature’s first meal.*
An iron-binding immune protein
Lactoferrin is a protein in colostrum that supports the body’s natural defenses and a balanced gut environment — part of how the first milk protects a vulnerable newborn.*
Support where immunity lives
Colostrum’s growth factors and bioactive proteins help support the integrity of the gut lining — the barrier where the majority of your immune system does its work.*
The proof, with sources.
In a double-blind, placebo-controlled crossover trial, 14 days of bovine colostrum blunted the rise in gut permeability brought on by heavy exercise by roughly 80% vs. placebo — a direct look at colostrum supporting the gut barrier under stress.
RCT, gut barrierMarchbank & Playford et al., Am. J. Physiol. Gastrointest. Liver Physiol., 2011 · PMID 21148400A systematic review and meta-analysis of randomized trials in active adults found bovine colostrum was associated with about 38% fewer upper-respiratory-symptom episodes and ~44% fewer symptom-days vs. placebo.
Meta-analysis, immune supportJones et al., 2016 · PMID 27462401In a randomized, triple-blind, placebo-controlled trial of 158 university students, a moderate daily colostrum dose meant significantly fewer days with upper-respiratory symptoms in higher-risk participants (p=0.002).
RCT, immune supportKazimierska et al., 2023 · PMID 37111143The daily habit.
A promise to yourself
One unflavored scoop stirred into your morning water. No flavor, no fuss.
Steady support
Colostrum works with consistency — a daily supply of immune and gut-supporting compounds while your diet changes.
Defenses, kept staffed
Keep the raw materials coming even as your appetite stays low. Easy to keep, easy to feel good about.
Days to feel the difference, or your money back.
Take Defend every morning for two full months. If it isn’t earning its place in your routine, write to us for a full refund. No forms, no interrogation. Our word, kept in writing.
Before you start
What is colostrum, exactly?
Colostrum is the very first milk a mammal produces in the day or two after birth — before regular milk comes in. It’s naturally concentrated with immunoglobulins, lactoferrin and growth factors to prime a newborn’s immune system and gut. Defend uses bovine (cow) colostrum, standardized to 25% immunoglobulins — just colostrum, with nothing else added.
Why take it on a GLP-1?
When your appetite drops and you eat much less, your body still needs a steady supply of the compounds it uses to keep its defenses and gut lining in good shape. Colostrum is a concentrated, easy way to keep those raw materials coming while your diet is changing. It supports your immune system and gut — it isn’t a treatment for any condition.*
Is it dairy? I’m lactose sensitive.
Colostrum comes from cow’s milk, so it is a dairy product and isn’t suitable if you have a milk allergy. It is naturally very low in lactose, and many people who are mildly lactose sensitive tolerate it well — but if you react to dairy, check with your doctor first.
Is it safe to take with my medication?
Defend is a dietary supplement made from bovine colostrum, not a drug, and it makes no claim to treat or interact with any medication. As with anything new — especially alongside a GLP-1 — run it by your doctor, then take it with confidence.
How do I take it, and how long does a tub last?
One level scoop stirred into 6–8 oz of cold water a day — morning is easiest to remember. Each tub is 30 servings, about a month. It mixes best when enjoyed within about 10 minutes of stirring.
What if it’s not for me?
Take it every morning for 60 days. If you don’t feel it’s earning its place, write us for a full refund.