Certified Sport + Performance Products

Clinically proven supplements to improve endurance, energy, strength and lean body mass.

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Trusted By The Best

World-class performers trust our products every day. Whether you are going for the podium or just winning your own battle, you deserve the best.

Danielle Brandon

5x Crossfit Games Athlete

Josh Bridges

Former Navy Seal and 6x CrossFit Games Athlete

Allie Wilson

800m Olympian

Matt Centrowitz

1500m Olympic Gold Medalist

Amanda Barnhart

6x Crossfit Games Athlete

Craig Engels

Your Mothers Favorite Runner

Jess McClain

Marathoner

David Winne

US ARMY Hybrid Athlete

Emily Loogman

Crossfit Games Athlete

Clayton Murphy

800m Bronze Medalist

Trista Smith

Crossfit Games Athlete

Sinclair Johnson

US Middle Distance Runner

John Gaset

Strength, Mobility, & Endurance coach

Xendurance Products:

Informed Sport Certified

First US company to use trusted global testing method

Gluten Free Preservative Free

Safe for celiacs and no bad fillers.

Rigorous Testing

Xendurance products are validated through third party testing

Made in the USA

Proudly made and owned in the USA.

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Fueled 350,000+ Peak Performers

This supplement has been crucial for recovery (especially putting in 60+ miles and 3-4 strength workouts a week) It used to take multiple days to recover from a hardcore speed workout. Now I’m recovered same day or at least by my run the next morning. Incredible.

Cameron A

Runner

I was hesitant at first but gave Extreme Endurance a try. I took it consistantly and started see a shift upwards in FTP in about 3 weeks. It has also helped greatly with recovery. I'm a believer and a happy customer!

Brandy Y

Cyclist

I love the extra boost I felt after just a few days on this. My body recovers faster after each workout. And, on the water, I can go farther without running out of air, strength, and drive. Solid product with solid results.

Mark R

Kayak

I have been taking this creatine for over a month now and am seeing results! I feel stronger and I'm not sore day to day. It tastes good and I am seeing no negative side effects like I have on some other brands of creatine.

M.S.

Gym

I’ve never really know what to look for in terms of results for a protein power and pre workout, but when I started using Xendurance I knew exactly what I’d been missing. Powders are so finely cute, they don’t clump up when mixed with water and pre workout doesn’t make me feel like I’m about to have a heart attack

Jennifer C.

Athlete

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Over 7000 Reviews

Put to the test by America's peak performers and passed with flying colours.

60 day Money Back Guarantee

All Xendurance products come with a 60-Day Money Back Guarantee.

American Made

Proudly manufactured and shipped in the USA, since 1998.