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The Truth About Collagen for Joint Health
Dr. Gene Bruno, DBM, MS, RH(AHG) · Nutra Spotlight · May 2026
FORTIGEL®: An Evidence-Based Bioactive Collagen Peptide for Joint Health
There are so many different dietary supplement ingredient options when it comes to joint health, some better than others. Likewise, peptides are dietary supplement ingredients that are generating a lot of interest due to their range of benefits. One especially good ingredient that meets at the intersection of joint health and peptides is the Bioactive Collagen Peptide, FORTIGEL®.
What Is It?
Collagen is the main structural protein found in joints, skin, and other connective tissues. This protein is vital to our good health — it makes up 25% to 35% of the whole-body protein content. While there are different forms of collagen, Bioactive Collagen Peptides (also known as "hydrolyzed collagen" or "hydrolyzed collagen peptides") are highly bioavailable.
Furthermore, most of the credible research on collagen supplementation for human health was done using Bioactive Collagen Peptides, such as FORTIGEL®.
Why does bioavailability matter? When collagen is broken down into specific short-chain peptide sequences, the body can absorb and deploy them far more efficiently than whole collagen proteins — directing them precisely to the tissues that need them most.*
How It Works
What makes FORTIGEL® so special is that it doesn't just provide benefits you can feel — it actually helps support the structure (matrix) of joint cartilage.1 Specifically, during MRIs, FORTIGEL® was shown to help increase collagen type I & III, proteoglycans, and elastin — all of which are important for joint health.
Not only that, but it may help reduce enzymes that might otherwise contribute to degrading the cartilage matrix.2 These structural outcomes supporting the integrity of joint cartilage may take up to 48 weeks, but the benefits you can feel occur much more quickly.
What MRI Research Revealed About FORTIGEL®†
Collagen Type I & III
Supported increase in structural collagen fibers within joint cartilage matrix†
Proteoglycans
Supported increase in the molecules that give cartilage its shock-absorbing capacity†
Elastin
Supported increase in tissue elasticity — essential for flexible, resilient joints†
Degrading Enzymes
May help reduce enzymes that contribute to cartilage matrix breakdown†
"FORTIGEL® doesn't just provide benefits you can feel — it actually helps support the structure and integrity of joint cartilage itself."
How It Helps
So, what are the benefits you can feel? The human research on FORTIGEL® is compelling — and specific.
Reduced knee joint discomfort in young, physically active healthy adults*
5 grams of FORTIGEL® daily demonstrated meaningful support for knee joint comfort in an active population.*
Zdzieblik D, et al. Nutrients. 2021 Feb 5;13(2):523.3
Promoted joint comfort at rest and during everyday functional movements*
5 grams of FORTIGEL® daily promoted joint comfort during rest, walking, stair climbing, and squatting/kneeling in healthy men and women.*
Schulze C, et al. Int J Environ Res Public Health. 2024 May 27;21(6):687.4
These joint comfort benefits confirm that results extend to everyday functional movements — not just exercise-related joint discomfort. And they may occur in as little as 12 weeks of consistent daily use.*
References
- McAlindon TE, et al. Osteoarthritis Cartilage. 2011 Apr;19(4):399–405.
- Schunck M, Oesser S. J Int Soc Sports Nutr. 2013 Dec 6;10(Suppl 1):P23.
- Zdzieblik D, et al. Nutrients. 2021 Feb 5;13(2):523.
- Schulze C, et al. Int J Environ Res Public Health. 2024 May 27;21(6):687.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. †Based on published MRI research evaluating cartilage composition over longer-term supplementation with FORTIGEL® Bioactive Collagen Peptides.
The Product
Putting the Science into Practice: JointGel® Mixed Berry
FORTIGEL® is an evidence-based bioactive collagen peptide shown in human research to be effective for joint health. Not only does it provide relatively fast-acting results for joint comfort — it actually helps support the structure and integrity of joint cartilage over time.*
JointGel® by Purity Products delivers FORTIGEL® Bioactive Collagen Peptides alongside OptiMSM® — an ultra-pure, bioavailable sulfur compound that supports connective tissue integrity, tendons, and ligaments — in a delicious mixed berry drink mix built for daily use.*
FORTIGEL® Bioactive Collagen Peptides
The clinically studied bioactive collagen peptide featured in Dr. Bruno's article — shown to support joint cartilage structure and joint comfort during rest and everyday movement.*
OptiMSM®
An ultra-pure, bioavailable sulfur compound that supports connective tissue integrity, tendon and ligament health, and overall joint function.*
- ✓Stimulates cartilage growth*
- ✓Supports joint comfort during rest and everyday activities*
- ✓Helps support tendons, ligaments & connective tissue*
- ✓Promotes smooth, easy joint motion*
- ✓Delicious mixed berry flavor — mixes clean, no chalky texture
How to Use
Mix one scoop daily into 12–24 fl. oz. of cold water and stir until fully dissolved. Enjoy 1–2 servings per day for best results.
Pro Tip: Add a few ice cubes before mixing for a refreshing flavor boost.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Results may vary based on consistent daily use.
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FORTIGEL® is the evidence-based choice. JointGel® is how you take it every day.
Move better. Live stronger. Stay active at every stage of life.*
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Article Author
Dr. Gene Bruno, DBM, MS, RH(AHG) — "The Vitamin Professor™"
Adjunct Professor of Nutrition Science with over 30 years of experience in nutraceutical research and dietary supplement formulation. Dr. Bruno holds a doctorate in botanical medicine and is a registered herbalist — one of the most credentialed voices in the supplement industry.
Your Questions, Answered
Common Questions About
FORTIGEL® and JointGel®
Dr. Bruno's article answers the science. Here's everything else you may want to know.*
What does the clinical research on FORTIGEL® actually show? ⌄
Two key human studies make the case. Zdzieblik et al. (Nutrients, 2021) found that 5g of FORTIGEL® daily reduced knee joint discomfort in young, physically active healthy adults. More recently, Schulze et al. (Int J Environ Res Public Health, 2024) confirmed that 5g daily promoted joint comfort during rest and everyday functional movements — including walking, stair climbing, and squatting/kneeling — in healthy men and women. These comfort benefits may appear in as little as 12 weeks. Separately, MRI research showed FORTIGEL® supports cartilage structure by increasing collagen type I & III, proteoglycans, and elastin — structural benefits that may take up to 48 weeks.*
How long does it take to feel results? ⌄
Many users report noticeable joint comfort within approximately 3 weeks. Clinical research shows benefits continue to build with consistent daily use — meaningful support for joint comfort during everyday activities is documented at 12 weeks, and support for healthy cartilage structure from MRI research at up to 48 weeks. Consistency is essential: FORTIGEL® works through cumulative cellular signaling, not as an immediate fix.*
What is JointGel® and what makes it different? ⌄
JointGel® is a Cartilage Growth Matrix™ drink by Purity Products® featuring FORTIGEL® Bioactive Collagen Peptides — the exact ingredient featured in Dr. Bruno's article — alongside OptiMSM®, an ultra-pure sulfur compound that supports connective tissue integrity, tendon and ligament health, and overall joint function. Most collagen supplements are repurposed beauty formulas. JointGel® is built specifically for joint health, backed by a 60-day money-back guarantee and produced in cGMP-compliant facilities.*
Why is OptiMSM® included in the formula? ⌄
Cartilage is only part of the joint health picture. OptiMSM® supports the connective tissue surrounding your joints — tendons, ligaments, and soft tissue — delivering biologically available sulfur to fortify elasticity, support flexibility, and promote overall joint function. It also supports antioxidant capacity. Together with FORTIGEL®, it forms JointGel®'s dual-action approach to joint support.*
Can I take a double dose of JointGel®? ⌄
Yes. Clinical studies on FORTIGEL® used both single and double daily doses. Each serving of JointGel® delivers one dose — but doubling your daily serving is safe and consistent with the higher doses used in joint cartilage growth research. Purity Products® recommends 1–2 servings per day for best results.*
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary. Based on consistent daily use. Clinical research referenced pertains to the ingredient FORTIGEL® and is not a claim about JointGel® as a finished product.