Home Ingredients B-2Cool® (Undenatured Type II Collagen)
Joint Health

B-2Cool® (Undenatured Type II Collagen)

Evidence Level
Moderate
1 Clinical Trial
3 Documented Benefits
3/5 Evidence Score

B-2Cool® supplies undenatured (native) type II collagen, a low-dose joint ingredient that works differently from regular collagen. Rather than acting as a building block, a tiny daily dose is thought to retrain the immune system to stop attacking joint cartilage, and a clinical trial of UC-II® (a different brand of undenatured type II collagen, not B-2Cool® specifically) reported better knee comfort and flexibility in adults with knee osteoarthritis.

Studied Dose About 40 mg of undenatured type II collagen per day.
Active Compound Undenatured (native) type II collagen, providing intact collagen with preserved three-dimensional structure.

Benefits

Knee comfort

In a multicenter randomized controlled trial, UC-II® undenatured type II collagen (a different brand than B-2Cool®) improved knee osteoarthritis symptom scores versus placebo; this supports the ingredient class rather than B-2Cool® specifically.

Supported by Trial 1

Joint flexibility and mobility

Undenatured type II collagen (studied as the UC-II® brand, not B-2Cool® specifically) has been examined for joint flexibility and range of motion, including in active people without diagnosed arthritis, in a separate trial not cited here.

Supported by Trial 1

Low-dose convenience

A single small 40 mg daily dose works through an immune mechanism, far less than the grams needed for structural collagen.

Supported by Trial 1

Mechanism of action

1

Oral tolerance

Tiny amounts of intact type II collagen interact with immune tissue in the gut, and are thought to train regulatory immune cells to dampen inflammatory activity against joint cartilage — a proposed mechanism, not a proven one.

2

Reduced cartilage inflammation

By calming the inflammatory/immune component thought to contribute to joint wear, undenatured collagen is proposed to help preserve cartilage and ease discomfort.

Clinical trials

1
Undenatured Type II Collagen and Knee OA — RCT
PubMed

Multicenter randomized, double-blind, placebo-controlled study of UC-II® undenatured type II collagen (a different brand than B-2Cool®) at 40 mg/day in knee osteoarthritis. (Lugo et al. 2016, Nutrition Journal)

Adults with knee osteoarthritis.

Undenatured type II collagen improved knee osteoarthritis symptom scores versus placebo.

Side effects and drug interactions

Common Potential side effects

Generally well-tolerated — adverse effects are uncommon at normal doses.
Mild digestive upset is occasionally reported.
Discontinue if any unusual reaction occurs.

Important Drug interactions

No major drug interactions are established for this ingredient.
Tell your doctor about all supplements if you take prescription medication.
Use caution if pregnant, breastfeeding, or managing a health condition.

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Frequently asked questions about B-2Cool® (Undenatured Type II Collagen)

What is B-2Cool?

B-2Cool® supplies undenatured (native) type II collagen, a low-dose joint ingredient that works differently from regular collagen. Rather than acting as a building block, a tiny daily dose is thought to retrain the immune system to stop attacking joint cartilage, and a clinical trial of UC-II® (a different brand of und…

What is B-2Cool used for?

B-2Cool is researched primarily for Joint Health. In a multicenter randomized controlled trial, UC-II® undenatured type II collagen (a different brand than B-2Cool®) improved knee osteoarthritis symptom scores versus placebo; this supports the ingredient class rather than B-2Cool® specific…

What is the recommended dosage of B-2Cool?

The clinically studied dose is About 40 mg of undenatured type II collagen per day. Always follow the product label and check with a healthcare provider for personal advice.

Is B-2Cool safe, and does it have side effects?

For most healthy adults, B-2Cool is well tolerated at studied doses. Reported effects can include: Generally well-tolerated — adverse effects are uncommon at normal doses. Mild digestive upset is occasionally reported. It may also interact with some medications. B-2Cool is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Does B-2Cool interact with any medications?

Possible interactions include: No major drug interactions are established for this ingredient. Tell your doctor about all supplements if you take prescription medication. If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for B-2Cool?

NutraSmarts rates the evidence for B-2Cool as Moderate (3 out of 5). It is backed by 1 clinical trial and 1 cited reference summarized on this page. A higher rating reflects more, larger, and better-designed human studies.

References(1 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Lugo JP, Saiyed ZM, Lane NE. Efficacy and tolerability of an undenatured type II collagen supplement in modulating knee osteoarthritis symptoms: a multicenter randomized, double-blind, placebo-controlled study. Nutr J. 2016;15:14..PubMedUsed to support: RCT supporting knee-comfort benefit of undenatured type II collagen.