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About XND

Founded over 25 years ago, Xendurance set out to revolutionize sports nutrition and wellness with a commitment to exceptional performance and uncompromising product quality. In 2008, it became the first company to achieve Informed Sport certification for its flagship product, Extreme Endurance, marking a milestone in its pursuit of excellence.

Driven by the founders’ extensive experience as athletes and health professionals, Xendurance continues to empower athletes and active individuals of all ages through innovation, integrity, and a relentless focus on optimal performance.*

Scientific Efficacy

In a world of noise and misinformation, Xendurance chooses to support only those compounds backed by rigorous scientific research.

From the decade of independent research and clinically proven ingredients behind Extreme Endurance to the extensively researched Creapure® used in Creatine-JB, only those substances with proven efficacy have a place in our product line. Rather than make unsubstantiated claims, we continually ask third parties to test product performance with invariably positive results.

State-of-the-Art Manufacturing

The supplement industry often grapples with unreliable manufacturing, with products hiding behind proprietary blends that skimp on effective doses or contain harmful contaminants.

At Xendurance, we formulate our supplements in strictly controlled, Good Manufacturing Practice (GMP)-certified facilities, adhering to rigorous NSF/ANSI standards to guarantee pure, accurately labeled ingredients—nothing more, nothing less.

Partnering with Informed Sport, the world’s leading independent sports drug testing lab, we proudly carry Informed Sport certification on many of our products, ensuring our products are free of banned substances and trusted by athletes who depend on them, worldwide.

Xendurance Ecosystem Of Health

At Xendurance, we champion a vibrant, enduring life through our Ecosystem of Health, built on five core pillars: nourishing whole foods, dynamic movement, premium supplementation, restorative sleep and recovery, and resilient mental health. This holistic framework fuels both your lifespan—the total years you live—and your healthspan, the years you thrive, free from debilitating disease or limitations. With clean, scientifically backed, performance-driven products, Xendurance empowers athletes and active individuals to excel in every facet of health.