Your 360° Collagen Partner for Innovative Foods, Beverages, & Dietary Supplements

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More Than a Raw Ingredient Supplier

Over a Century of Collagen Expertise

 Wellnex specializes in the production of bovine, porcine, fish, and marine collagen peptides for use in trending applications for functional foods, beverages, and nutraceuticals. Utilizing technical expertise and decades of know-how from our roots in Japan, Wellnex leads the way in clinically tested, award-winning collagen ingredients under its Replenwell™ product line. As responsible stewards of the environment, we’re proud to offer sustainably harvested collagen peptides from wild-caught marine or grass-fed bovine sources. 

Our global footprint includes sales, marketing, and research facilities across the USA, Japan, India, and China, offering unique regional insights paired with unmatched international collaborative capabilities. As part of the Nitta Gelatin Inc. group, Wellnex leverages over 100 years experience in the collagen ingredient market to support our customers around the world. 

Strategically located in North Carolina’s Research Triangle, the Wellnex North America HQ includes teams of sales, marketing, regulatory, formulation, and nutrition experts, ready to support our customers in the Americas and Europe. Our NC facility boasts a full scale food innovation lab, confection room, sample program, and pilot plant. From ideation to commercialization, Wellnex is more than just a raw material supplier. We’re your 360 degree collagen ingredient partner, from ideation to scale-up and commercialization.   




Bringing targeted science-based health benefits through proven physiological mechanisms of action. We use proprietary hydrolysis processes based on clinical research to create collagen peptides with industry-leading levels of bioactive compounds including proline-hydroxyproline and hydroxyproline-glycine.


Named NutraIngredients-USA’s 2021 Ingredient of the Year for beauty applications, Wellnex Replenwell™ collagen peptides pack a powerful punch to the visible signs of skin aging. Now with 5 gold-standard human clinical trials supporting significant reductions in wrinkles, dryness, loss of elasticity and uneven skin tone.

Healthy Aging

Senior populations face unique health challenges. Only Wellnex Replenwell™ collagen peptides have been clinically studied for a variety of top healthy aging benefits including cardiovascular support, cognitive function, metabolic balance, and comfortable mobility.

Sports Nutrition

Wellnex Replenwell™ collagen peptides are functional proteins, playing dual roles of nutritional powerhouse and targeted bioactive for joint support and athletic recovery. Clinical studies show significantly improved joint comfort for athletes with as little as 5 grams per day.


Food & Beverage

Dietary Supplements

Clinical Nutrition

The Latest from Wellnex

Visit Us at SupplySide West in Las Vegas!

Visit Us at SupplySide West in Las Vegas!

It's that special time of the year when the air begins to cool, leaves start to turn, and everything is pumpkin spice... 🍂 🎃 🍁 It could only mean one thing - that SUPPLYSIDE WEST is just around the corner!...

Wellnex Debuts MSC Certified Marine Collagen Peptides

Wellnex Debuts MSC Certified Marine Collagen Peptides

Nitta Gelatin NA Inc. proud to partner with the Marine Stewardship Council (MSC) to bring wild-caught, certified sustainable marine collagen peptide ingredients to our customers! Look for the MSC blue fish label to: 🐟 Prevent food fraud🐟 Combat...