Dr. Chris Kresser

1. Bio-Avail Colostrum+ is the only 3-in-1 formula that delivers what regular colostrum can't.

Bio-Avail Colostrum+ combines 2.5g of grass-fed colostrum with 100mg Bioferrin® lactoferrin and 250mg Wellmune® beta-glucan - powerful nutrients that work synergistically to seal your gut, strengthen your barriers, and train your immune system. This unique combination is why our customers experience complete transformations while others just feel "slightly better." If you bought these three ingredients separately, you'd spend over $150 and take multiple supplements. With Bio-Avail Colostrum+, you get them all in one scoop.

"Adapt Naturals Bio-Avail Colostrum has been a game changer for my health. Within days, I noticed better digestion, improved energy, and a stronger immune system. The quality is top-notch, and it mixes easily with no strange aftertaste. I feel healthier and more resilient than ever – highly recommend!" –Kristen, Verified Buyer

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Dr. Chris Kresser
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2. Real customers are going from "I can only eat 10 foods" to "I can eat everything" (and calling it life-changing).

These aren't paid testimonials or cherry-picked results. These are real transformations from verified buyers who tried everything else first. Michele went from "insane bloating and emotional insanity" to "I'm a different person" in 3 months. Sarah's boys went from getting sick every other week to staying healthy all season. One customer's breakouts that lasted through their mid-30s completely stopped and their "skin started glowing." When over 5,000 customers use words like "life-changing," "magic ingredient," and "I'll never go without it," you know something extraordinary is happening.

"I've had gut issues for 29 years. The gas and bloating I usually experience daily has decreased dramatically! It's a definite GAME CHANGER!" –Dana, Verified Buyer

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Dr. Chris Kresser

3. You get 2.5X more colostrum per serving (the dose that studies actually use).

Most colostrum brands give you 1 gram per serving and hope you don't check the research. But studies showing real benefits use 2+ grams, which is exactly what Bio-Avail Colostrum+ delivers - 2.5 grams of cold-processed, grass-fed colostrum from pasture-raised cows never given hormones or antibiotics. That's why customers switching from other brands finally see the transformations they expected. Plus, at the right dose, colostrum actually costs less per gram with Bio-Avail Colostrum+ than with most "premium" brands that underdose you.

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Dr. Chris Kresser

Chris Kresser, M.S., L.Ac.

4. It's created by Chris Kresser, the Functional Medicine expert who's treated thousands of patients (not an Instagram influencer).

Chris Kresser, M.S., L.Ac., is a globally-renowned Functional Medicine clinician and New York Times bestselling author who's spent 15+ years treating thousands of patients with chronic gut and immune issues. He's trained over 2,000 practitioners through Kresser Institute and was named one of the 100 most influential people in health and fitness. Bio-Avail Colostrum+ was born from real clinical experience - seeing what actually works for real patients, not what sounds good in marketing. When you choose Bio-Avail Colostrum+, you're getting a formula refined through thousands of patient outcomes, not social media hype.

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Dr. Chris Kresser

5. It works for people who've "tried everything" (with a 90-Day guarantee to prove it).

Our reviews are filled with people who tried probiotics that made things worse, elimination diets that left them starving, and other colostrums that did nothing. Bio-Avail Colostrum+ works because it addresses the root cause - actually sealing the gut barrier and rebuilding immune defenses - not just adding more bacteria or removing foods. And we're so confident you'll finally get results that we offer a 90-Day, 100% money-back guarantee. No questions, no hassle. Because when something actually works, you don't need fine print.

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Bio-Avail Colostrum+ Welcome Kit

Bio-Avail Colostrum+ Welcome Kit

(266 Reviews)
60-Day Supply. Ships every 8 weeks. Your first subscription order also includes:
• 1x FREE Biome Protect ($57.93 value)
• 1x FREE Hand Frother ($25.99 value)
• 1x FREE Bio-Avail Colostrum+ Storage bottle ($7 value)
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Your Questions Answered

You can mix Bio-Avail Colostrum+ into both foods and beverages! Recent research suggests that for generally healthy individuals, taking colostrum with food does not significantly impact its absorption or benefits. Feel free to stir it into yogurt, oatmeal, smoothies, or other foods and drinks.

However, we advise against mixing Bio-Avail Colostrum+ into hot beverages like coffee or tea, as high temperatures can degrade the delicate immunoglobulins and other beneficial proteins. Stick with room temperature or cold liquids and foods for optimal results.

If you have diabetes, metabolic issues, or simply find you get better results taking it on an empty stomach, mixing Bio-Avail Colostrum+ with 6-8 ounces of room-temperature water and drinking it 30 minutes before or 2 hours after a meal is still a great option.

We source our colostrum from grass-fed, pasture-raised farms across the US. It’s free from pesticides, heavy metals, antibiotics, and hormones. And it’s cold-processed to keep the fragile immunoglobulins and other nutrients intact.

While colostrum does contain a minimal amount of lactose, it is generally well-tolerated by people who are sensitive to lactose. We recommend speaking with your healthcare provider before supplementing with Colostrum+ if you are sensitive to lactose.

Yes, all dairy products (including colostrum) contain casein. We do not recommend taking Bio-Avail Colostrum+ if you have a casein sensitivity or allergy. 

No. The pasture-based farms we source colostrum from understand the importance of colostrum to developing calves. The calves are fed 2–4 liters of colostrum shortly after birth. New mothers often produce more than 12 liters, so the farmers can harvest this excess colostrum without harming the calves. 

Lactoferrin is naturally present in colostrum at 0.3-0.5%. This equals 3-5 mg per gram, or 7.5-12.5 mg per our 2.5 gram serving. However, Bio-Avail Colostrum+ also includes 100 mg of pure lactoferrin—yielding a total of 107.5 to 112.5 mg of lactoferrin per serving. This is far higher than other colostrum products that do not contain additional lactoferrin. 

Yes, all Adapt Naturals products, including Bio-Avail Colostrum+, undergo rigorous third-party testing for purity and potency. Most importantly, we transparently share these results with our customers by posting Certificates of Analysis (CoAs) and test results on our website. This level of openness is almost unheard of in the supplement industry. It allows you to see exactly what’s in the product you’re putting into your body. Click here to view the most recent CoA and test results.

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