New comprehensive formula reimagines an outdated category with a strong foundation for gut-driven health

Momentous, the leading human performance company focused on supplementation and nutrition, today announced the launch of Fiber+, the best-in-class performance-focused fiber supplement designed to go beyond digestion to support gut health, metabolic function, and whole-body health. Featuring a triple-action fiber formula, Fiber+ is an essential component for overall wellness, reimagining an outdated category with a product formulated to The Momentous Standard™.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260224659411/en/

Featuring a triple-action fiber formula, Fiber+ is an essential component for overall wellness delivering 6g of fiber per serving. Fiber+ reimagines an outdated category with a product formulated to The Momentous Standard™.

Delivering 6g of fiber per serving, the formulation, coming in both Unflavored and Pure Cinnamon options, leverages the latest science on fermentable fibers, resistant starch, and short-chain fatty acid (SFCA) production to deliver benefits beyond digestive comfort. Fiber+ is the first fiber supplement that includes the following in its formulation:

• Psyllium husk (soluble fiber): Supports blood sugar control, cholesterol levels, and satiety.
• Rice bran (insoluble fiber): Supports digestive comfort and regulation.
• Potato starch/Solnul® (resistant starch): Produces short-chain fatty acids like butyrate that support gut barrier integrity, inflammation balance, and metabolic health.
• Real cinnamon bark for its pure cinnamon flavor option, utilizing Momentous’ single-ingredient pure-flavor system, free of artificial flavors, sweeteners, or masking agents.

“At Momentous, we prioritize the essentials that drive the greatest impact on how people feel and perform, and fiber is one of the most overlooked opportunities in nutrition, with nearly all Americans falling short,” said Jeff Byers, Co-Founder and CEO of Momentous. “Gut health influences everything from energy and recovery to long-term resilience, but the category hasn’t kept pace with the science. Fiber+ reflects our commitment to delivering foundational nutrition at the highest standard, because sustainable, life-long performance starts with getting the basics right.”

While a new generation of wellness optimizers increasingly recognizes the gut as a command center for holistic health, the fiber category has remained stagnant. 95% of Americans do not consume enough fiber, with 67% of Americans operating under false pretenses that they do. Recent research underscored fiber's critical role in supporting gut barrier integrity, metabolic health, and inflammation balance through SCFA production. With new federal nutrition guidelines further prioritizing protein intake, thoughtful fiber supplementation is more essential than ever to maintain balanced nutrition and support overall health.

Fiber+ was formulated with input from experts, including Arnold Schwarzenegger and the team at Arnold's Pump Club, and addresses emerging research around the gut-brain connection, gut-muscle axis, and the microbiome's role in metabolic health. With Fiber+, Momentous also introduces Arnold’s Ultimate Stack, Schwarzenegger’s personally selected Momentous routine with Protein, Creatine, Fiber+, and Vitamin D3. The stack reflects the shared philosophy underpinning both The Arnold Standard and The Momentous Standard: proven fundamentals, rigorous testing, and building to the goal of performance for life.

"This isn't your grandparents’ fiber," said Arnold Schwarzenegger. "The fantastic thing about working with Momentous on Fiber+ is building fiber that people actually want to take - and a complete fiber that doesn’t just terminate bloating and improve digestion, it rebuilds your gut bacteria. No gimmicks. No nonsense.”

Fiber+ is NSF Certified for Sport®, gluten-free, non-GMO, vegan, and contains no artificial additives. The product is $39.95 with 30 servings per container, and available at www.livemomentous.com/products/fiber-plus as well as in Vitamin Shoppe locations nationwide. Arnold’s Ultimate Stack is available for $142.80, and Arnold’s Essential Stack (includes Creatine and Fiber+) is available for $64.90.

About Momentous

With headquarters in Park City, Utah, Momentous is a wellness and nutrition company, with a mission to empower the relentless pursuit of progress in health and performance. Offering the highest quality supplements designed to enhance physical and cognitive well-being alongside the brightest across performance athletics and science, Momentous believes that people at their best will produce a positive impact in their personal lives, communities, and, ultimately, the world. Momentous sources best-in-class ingredients for its formulations and holds its products to the highest possible standards, investing in a rigorous quality control process while receiving NSF Certifications across its portfolio. Momentous is a trusted partner of over 200 professional and collegiate sports programs in North America, and the Department of Defense and the United States Military, developing new products and solutions to help optimize the human performance of its servicemembers. For more information, please visit www.livemomentous.com.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260224659411/en/

"This isn't your grandparents’ fiber," said Arnold Schwarzenegger. "The fantastic thing about working with Momentous on Fiber+ is building fiber that people actually want to take."