Immune Fortress
The Gut-First System That Transforms Your Immune Resilience.
Immune Fortress
The Gut-First System That Transforms Your Immune Resilience.
A two-product protocol that strengthens your immune system at the root: the gut-immune axis. Featuring Bio-Avail Colostrum+ and Biome Protect, this system supports immune function, digestion, energy, and resilience through every season.
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Build lasting immune strength without megadosing synthetic vitamins
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Support gut integrity and balance to help stop illness before it starts
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Enhance resilience to stress, travel, and seasonal exposure
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Reduce sick days, improve energy, and feel protected year-round
Build Your Foundation
Colostrum-derived immunoglobulins and growth factors restore the integrity of your intestinal lining—the foundation of immune strength.
Support Microbial Balance
Spore-based probiotics and bacteriophages support microbial balance without the bloating, gas, or "adjustment period" of typical probiotics.
Strengthen Your Response
Beta-glucan and lactoferrin help educate your immune system to respond faster and more effectively to threats.
True Immune Resilience
Real users report fewer illnesses, quicker recovery, and protection when surrounded by sickness.
Key Ingredients
BIO-AVAIL COLOSTRUM+
2.5g Grass-Fed Colostrum – with immunoglobulins, growth factors, and PRPs for gut repair and immune signaling
Lactoferrin (100mg) – supports beneficial bacteria and reduces unwanted microbial growth
Beta-Glucan (200mg) – clinically shown to train innate immune cells and reduce sick days
BIOME PROTECT
FortiPhage™ Bacteriophage Prebiotic – selectively targets problematic bacteria without collateral damage
LactoSpore® Bacillus coagulans – spore-based probiotic that survives digestion and supports immune balance
CoreBiome® Tributyrin – delivers butyrate to nourish gut cells and reinforce barrier integrity
Signs You Need Immune Fortress
You get sick more often than others
Illness lingers longer for you than your peers
You feel "fragile" during cold, flu, or travel season
Your digestion and energy are inconsistent
You're done with short-term fixes and want lasting resilience
What you'll feel with Immune Fortress
90-Day Money Back Guarantee
We're confident you'll love our products, but if you're not completely satisfied, we offer a 90-Day, 100% money-back guarantee on all purchases. Simply contact us for a full refund, no questions asked. Buy with confidence knowing you're covered by our guarantee.
The Adapt Naturals Standard
In our increasingly toxic world, the last thing you want to worry about is a lot of artificial junk in your supplements. Adapt Naturals supplements are made with the cleanest possible ingredients, without gluten or GMOs. Our products are manufactured in a U.S. facility that meets the NSF's rigorous GMP regulatory standards.
Third-Party Lab-Tested with Transparent Results
We conduct third-party testing on all our products to verify their purity, potency, and safety. Most importantly, we transparently share these results with our customers by posting Certificates of Analysis (COAs) and test results directly on our website. We want you to have full confidence that you're getting exactly what you think you are with each purchase.
See Test Results
Meet Chris Kresser, your
Trusted Health & Wellness Guide
Founder & Functional Medicine Clinician
- Globally renowned expert with over 15 years of experience
- Dedicated to helping people improve their health by addressing modern challenges and nutrient gaps
Author & Educator
- Treated thousands of patients
- Trained more than 2,000 healthcare professionals
- Gained valuable insights into functional medicine and nutrition
Unlock Your Optimal Health
Rebuild your gut. Restore your immunity.
Immune Fortress — Your First Line of Defense, Reimagined
