Finally, A Collagen That Actually Works—Certified Grass-Fed + Clinically Optimized

Made with verified grass-fed collagen PLUS optimal 2kDa absorption for results you can see and feel in weeks, not months

Clinician-Formulated | 3rd Party Tested | 60-Day Guarantee | Free Shipping

★★★★★ 4.9/5 (18 verified reviews)

Starting at $39.69/month (With 10% Subscribe & Save)

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Why Bio-Avail Collagen+ is Different ↓

Hear What Others Are Saying

5 Science-Backed Benefits in 30 Days or Less

Erase Fine Lines & Restore Skin Elasticity

Bio-Avail Collagen+ delivers optimal 2kDa peptides that signal your cells to boost collagen production. Studies show up to 30% improvement in skin elasticity after just 8 weeks of collagen supplementation*.

“Effortlessly blend into my coffee without any weird tastes. And if the improvements I can visibly see are any indication, this is what my body has been missing for SO long. My fingernails have never been this healthy in my life. They were always thin, brittle, and broke easily. More it feels like my body is functioning more normally. I will continue using this!” - Colette, Verified Buyer

Eliminate Joint Discomfort & Move Freely

With 10g of therapeutic-dose collagen daily, you'll support cartilage integrity and joint comfort. Perfect for active lifestyles and aging gracefully.

“I've been taking collagen (a different brand) for almost a year without seeing much change in my joints or skin. After only a month of Bio-Avail Collagen+ the creaking in my knees has gone away, and I've had creaking in my knees for years!” - Tyler, Verified Buyer

Accelerate Recovery & Reduce Soreness

The glycine in our collagen supports muscle repair and reduces recovery time. Wake up feeling refreshed instead of stiff and sore.

“This is the first time I’ve taken collagen that I can actually see and feel a difference! My skin is radiant, I’m recovering from my workouts in record time and I’m sleeping better and I have only been taking this product for a week. I’m shocked at the difference and I won’t ever be without this specific collagen. I’ve taken collagen before and saw and felt no difference. This was an immediate change.” - Side, Verified Buyer

Strengthen Hair, Nails & Gut Health

Collagen peptides support tissue integrity throughout your body—from stronger nails to healthier hair to improved gut lining.

“This product is far superior than any competitors. I have noticed a big difference in switching brands. Gut health, hair, nails, etc.” - Kim, Verified Buyer

Deep, Restorative Sleep

The high glycine content in collagen promotes better sleep quality and helps you fall asleep faster.

“I know all the benefits of collagen and look forward to receiving them all from Adapt Naturals. I can’t tell you how much it puts my mind at ease to know that I’m consuming a healthy, uncontaminated collagen. I know I can trust this brand. Such an amazing feeling! An extra added bonus - there is literally no flavor. No nasty aftertaste. I love this collagen.” - Peg, Verified Buyer

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Why Your Current Collagen Isn't Working

If you've tried collagen before and felt disappointed, you're not alone. After 15 years in clinical practice, I kept hearing the same frustrating story from patients.

They were spending $40-80+ monthly on collagen, yet still struggling with:

Persistent joint discomfort and morning stiffness
Fine lines and sagging skin despite good skincare
Slow recovery and lingering soreness after exercise
Brittle nails and thinning hair

The truth? Many collagen supplements use unverified sourcing, sub-optimal molecular weights, and inadequate dosing that can't deliver clinical results.

After seeing thousands of patients waste money on ineffective formulas, I knew there had to be a better way...

Introducing Bio-Avail Collagen+: The Clinical-Grade Formula

This deep understanding, gained from treating thousands of patients and training hundreds of clinicians, led me to create Bio-Avail Collagen+—the first collagen formula that combines certified grass-fed sourcing with optimal molecular weight and therapeutic dosing. Bio-Avail Collagen+ contains Types I & III collagen—the two most abundant collagen types in your body that support skin elasticity, joint comfort, bone strength, and gut lining integrity. These are the exact types that decline with age and need replenishment.

What Makes Bio-Avail Collagen+ Different:

✓

Certified Grass-Fed Made with the ONLY collagen ingredient certified by LIAF Control in conjunction with the American Grassfed Association

✓

Optimal 2kDa Size Scientifically proven for maximum absorption

✓

10g Therapeutic Dose The amount used in clinical studies

✓

Single Ingredient Purity No fillers, sweeteners, or additives

✓

Dissolves Crystal Clear No clumping or weird texture

✓

Third-Party Tested Every batch verified for purity and potency

Made in USA | GMP Certified | Non-GMO

Try Bio-Avail Collagen+ Risk-Free

The Bio-Avail Difference: It's Not Just Grass-Fed, It's Certified

Through years of clinical research, I discovered why traditional collagen fails—and created the breakthrough my patients needed.

Standard Collagen	"Grass-Fed" Collagen	Bio-Avail Collagen+
Uknown source	Unverified claims	Certified grass-fed
5-20 kDa molecules	Variable sizes	Optimal 2 kDa
2.5-5g dose	5-10g dose	10g clinical dose
Multiple ingredients	Some additives	Single ingredient

The Clinical Breakthrough: Bio-Avail Collagen+ is the first formula to combine certified grass-fed sourcing with scientifically optimal molecular weight—creating absorption and results you can actually feel.

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Real Transformations from Real People

★★★★★

Jator, Verified Buyer

"I push my body hard, typically upwards of 15 hours of training per week, encompassing Ice Hockey, Resistance Training, and Performance training (agility, power, speed, etc.). Incorporating Bio-Avail Collagen + into my routine has decreased muscle fatigue and increased desired energy output. My HRV is trending up, as are my readiness and sleep scores via Oura. I highly recommend it."

★★★★★

Rebecca, Verified Buyer

"I have tried MULTIPLE collagen powders, liquid collagen, and collagen pills. I am a bit of a supplement "junkie";). I stopped buying collagen because I felt the quality wasn't consistent. I placed my old collagen and the Adapt Naturals head to head, and the Adapt had ZERO taste (which is a positive thing!) and dissolved much better than my old collagen powder. Chris and the Adapt team have done it again... you just can't beat the quality of their products. I am hooked!"

★★★★★

Tyler, Verified Buyer

"I've been taking collagen (a different brand) for almost a year without seeing much change in my joints or skin. After only a month of Bio-Avail Collagen+, the creaking in my knees has gone away, and I've had creaking in my knees for years!"

Join 15,000+ people who have transformed their health with Adapt Naturals

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

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✨ AGELESS VITALITY

Choose Your Ageless Vitality Bundle

Complete Support for Youthful Skin, Flexible Joints & Total Wellness

SAVE $87.00

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30-Day Supply

1 Bio-Aval Collagen+ PLUS 1 FREE Bio-Avail Omega+

$62.00

Bio-Avail Collagen+ $62.00

Bio-Avail Omega+ (FREE) -$87.00

Total value: $149.00

Your price today: $62.00

You save: $87.00 (58%)

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Future orders: $55.80/month

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*First order discount applies to today's purchase only. Subscribe & Save 10% applies to all future deliveries.
Free gift not included in recurring subscription orders.

FREE Bio-Avail Omega+
Reduces fine lines & improves skin elasticity
Supports joint comfort & mobility
Accelerates recovery & reduces soreness
60-day money-back guarantee

Building Your Complete Ageless Vitality Protocol

While Bio-Avail Collagen+ provides powerful standalone benefits for skin, joints, recovery, and vitality, some patients in my clinic needed additional support for complete rejuvenation. After years of clinical practice, I formulated complementary products that create a comprehensive ageless vitality system when combined with Bio-Avail Collagen+.

About your FREE Bio-Avail Omega+: The Recovery & Anti-Aging Amplifier

For patients seeking enhanced recovery, reduced post-exercise inflammation, and comprehensive anti-aging support, Bio-Avail Omega+ provides:

Full spectrum omega-3s in their natural triglyceride form
Bio-available forms of curcumin and black seed oil
Specialized pro-resolving mediators for joint comfort
Third-party tested for heavy metals or contaminants

This completes the ageless vitality trilogy: Bio-Avail Collagen+ for structure and beauty, and Bio-Avail Omega+ for recovery and cellular health.

60-Day Money Back Guarantee

We're confident you'll love our products, but if you're not completely satisfied, we offer a 60-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

At Adapt Naturals, all of our products are third-party tested and validated, and we are always happy to share these results with customers. We want you to have full confidence that you’re getting exactly what you think you are with each purchase.

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Your Questions Answered

What's the best way to take Bio-Avail Collagen+?

Mix one scoop (10g) into any hot or cold beverage. It dissolves completely clear with no taste, making it perfect for coffee, tea, smoothies, or plain water. For optimal results, take daily. You may notice benefits within 4-8 weeks of consistent use, with continued improvements over 3-6 months.

What makes your collagen "certified" grass-fed?

The term "grass-fed" is not regulated in supplements, meaning many companies can make this claim without verification. Our collagen is different—it'scertified by LIAF Control, a member of the American Grassfed Association. This certification guarantees that the cattle spent 100% of their lives on pasture, eating grass, with no hormones or antibiotics, and with full traceability back to the multigenerational, family source farms.Click hereto learn more about how we source our collagen.

What makes this different from other grass-fed collagen?

We use SOLUGEL® - the ONLY collagen ingredient certified by LIAF Control in conjunction with the American Grassfed Association. Plus, our optimal 2kDa molecular weight ensures maximum absorption.

How is Bio-Avail Collagen+ different from other collagen supplements?

Three key differences: 1) It's the only certified grass-fed collagen on the market; 2) It has a precise ~2 kDa molecular weight for optimal absorption and bioavailability; and 3) It contains a full 10-gram dose, which research shows is most effective for results. Plus, it's a clean-label product with absolutely no fillers, sweeteners, or additives.

What are the benefits of low molecular weight collagen peptides?

The ~2 kDa molecular weight of our collagen peptides makes them more bioavailable and easier to digest. This means better absorption, reduced digestive discomfort, and greater efficacy. Our collagen also dissolves completely clear in liquids—no clumps or gritty texture—making it more pleasant to consume.

Is this product suitable for people with dietary restrictions?

Bio-Avail Collagen+ is gluten-free, dairy-free, soy-free, and contains no added sugars, fillers, or artificial ingredients. However, it is derived from bovine sources, so it is not suitable for vegetarians or vegans.

How long will it take to see results?

While individual results vary, studies show benefits can be observed in different timeframes: improvements in skin elasticity within 4-8 weeks, joint comfort within 3-6 months, and exercise recovery benefits within 4-12 weeks. Consistency is key—daily use will yield the best results.

How does collagen help with appetite and satiety?

Research has shown that collagen peptides can significantly reduce appetite and subsequent meal energy intake compared to other proteins. This satiety effect is thought to be related to collagen's specific amino acid profile, which may influence hunger hormones and metabolic signals. Some studies showed a 20% reduction in food intake following collagen consumption.

Is Bio-Avail Collagen+ third-party tested?

Yes, all Adapt Naturals products, including Bio-Avail Collagen, 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.

Is Subscribe & Save really flexible?

Absolutely! You can cancel, pause, or adjust frequency anytime through your account. No phone calls required. It's simply the most convenient and affordable way to maintain your results.

The best!

Ive tried several collagen powders and this is by far, the best. No smell, no taste and it truly dissolves! There’s no comparison to any other powder out there. Thank you!!!

Hi Andrea,

What a fantastic review! Thank you for taking the time to write it! We’re thrilled that our Bio-Avail Collagen+ stands out for you and appreciate your kind words!

Affordable

A great bio available product that is half the price of the other product that was recommended to me.

Hi Heidi,

Thank you! We’re so happy you’re enjoying Bio-Avail Collagen+ and finding it both effective and accessible at a fair price. Grateful to have you with us!

Collagen

Great product I trust.

Hi Todd,

Thank you so much for your trust — it means a lot! We’re honored to be part of your wellness routine! Take care!

Feel confident with purchase

I've only been taking the Collegen+ for about a month, and I think it's way to early to tell if it's making an impact, but I trust the science. I'm recovering/healing from a rotator cuff surgery and any and all help is being thrown at it. I appreciate that it's third party tested, has 1 ingredient, is carbon neutral and is made/based in the USA. I will probably update product review at 6 month mark. I'm confident at this point though. Reviews and my amateur research all point to this being a promising product. Definitely feeling confident. May be related may not, but my rotator cuff surgery healing/recovery is actually way ahead of schedule. And my skin(along with other skin care products) is looking amazing. I will try to get a post recovery MRI to assess the tendon to bone healing/reattachment... If you've done your research and feel cologen is a product you could benefit from, I would choose this one. It's got the best reviews and company values, in my opinion, as well as a being a USA company. I see no downside. Just do it!
Jeff S.

Hi Jeff,

Thank you for such a thoughtful and detailed review—we truly appreciate it. Healing from rotator cuff surgery is no small feat, and we’re honored that Bio-Avail Collagen+ is part of your recovery toolkit. Our formula contains hydrolyzed collagen peptides for optimal absorption, plus glycine and hyaluronic acid to support connective tissue, joint function, and skin integrity.

We also appreciate your recognition of our third-party testing, clean formulation, and U.S.-based production. Transparency, quality, and environmental responsibility are central to everything we do. We're so glad you're feeling confident—and that your recovery is ahead of schedule! Please do keep us posted—we’d love to hear how things continue to progress at the 6-month mark.

Wishing you a smooth and speedy recovery!

Love it!

I have not taken collagen for years, even though I knew I needed it. When I first started taking collagen, I was using vital proteins collagen and it caused me to break out with hormonal acne. It took me a few months to put it together, but when I realized that this was the cause, I stopped using it, and the acne cleared up!! I tried again a year later, and the same thing happened.

I have been taking this collagen for over a month and a half and my face is still clear! I am so grateful for a company with clean products that I can trust.

Hi Jade,

We’re so glad to hear this—especially after your past experiences with collagen. Bio-Avail Collagen+ is formulated in a very clean, specific way—so it’s gentle and effective without triggering skin issues. Thanks for giving it a shot—we’re honored to be the one that works best for you!

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Still Have Questions?

Our customer care team is here to help. Email support@adaptnaturals.com

*Seong, S. H. et al. (2024). Low-molecular-weight collagen peptides supplement promotes a healthy skin: A randomized, double-blinded, placebo-controlled study. Journal of cosmetic dermatology, 23(2), 554–562. https://doi.org/10.1111/jocd.16026

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Finally, A Collagen That Actually Works—Certified Grass-Fed + Clinically Optimized

Hear What Others Are Saying

5 Science-Backed Benefits in 30 Days or Less