Certified Grass-Fed Collagen Peptides with Optimal 2 kDa Molecular Weight
Get the purest collagen made with SOLUGEL®—the only collagen ingredient with third-party certified grass-fed verification—plus clinically-optimized molecular size for maximum absorption!
✓ 10 grams of SOLUGEL® certified grass-fed collagen peptides per serving
✓ Optimal 2 kDa molecular weight for superior absorption and bioavailability
✓ Support skin elasticity, joint comfort, and gut health
✓ Dissolves completely clear—odorless and tasteless in any beverage
- Free Shipping
- 60-day Returns

Bio-Avail Collagen+ contains:

Adapt Naturals Bio-Avail Collagen+
Bio-Avail Collagen+ is the most transparently sourced, clinically formulated collagen supplement on the market. No other product combines certified grass-fed verification, optimal molecular weight, research-validated dosing, and single-ingredient purity in one superior formula.
- Certified grass-fed collagen with third-party verification
- Optimal 2 kDa molecular weight for maximum absorption
- Research-validated 10-gram therapeutic dose
- Single-ingredient purity without fillers or additives
- Dissolves completely clear in hot or cold beverages
- Formulated by globally-renowned Functional Medicine clinician Chris Kresser
- Made without gluten and GMOs
- Manufactured in the US in a certified GMP facility
Signs You Need Bio-Avail Collagen+
What You'll Feel Using Bio-Avail Collagen+

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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