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Xendurance
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The Endurance-Boosting Supplement that Every Runner Needs
#1 Improve Workout or Race Time
Clinically proven to reduce lactic acid and improve running performance - Extreme Endurance is a must have for any runner.
Whether you are gearing up for your next marathon or want to set a new 5K PR, this is a must have product to put to the test.
#2 Increase VO2 Max
Increase your pace and be able to hold on. Extreme Endurance makes it feel like you have a third lung while preventing your muscles from tightening up.
#3 Trusted By World Class Runners
Contributing to personal records, American records, and World Records - Extreme Endurance has been used by runners for over a decade to help break barriers.
Donavan Brazier set the American Record in the 800m after being on Extreme Endurance for two months.
#4 Improve Recovery Time / Less Muscle Soreness
Feels like putting on a brand new pair of running shoes every day.
Look forward to putting in more miles when you don't feel yesterdays workout.
By reducing Creatine Kinase (CK) levels by 6x means your muscles recover better during workouts and help speed up recovery.
#5 Clinically Proven + Tested By Informed Sport
Supported by 12 Clinical Studies and certified free of banned substances by Informed Sport. It feels like a performance enhancing drug, but isn't.
As seen on
GOODBYE SORENESS
HELLO PERFORMANCE
4.9/5.0 (1,000+ Reviews)
26% Reduction of Lactic Acid = Less Muscle Soreness
39% Reduction of Oxidative Stress = Improves Performance
6x Reduction of Creatine Kinase (CK) = Muscle Recovery
Increase in Aerobic Threshold = Better Vo2 Max
Benefits within 72 hours
Certified by Informed-Sport
PROVEN IN 12 CLINICAL STUDIES
JOIN 300,000 CUSTOMERS OVER 10+ YEARS
& TRUSTED BY WORLD CLASS ATHLETES
800M AMERICAN RECORD HOLDER
1500M USA TRACK TEAM
FORMER NAVY SEAL & CROSSFIT GAMES ATHLETE
3x CROSSFIT GAMES ATHLETE
Any runner or weekend warrior like you works out to push the limits and reach new heights. We’ve developed a super-supplement to help power your along the way, allowing you to train longer and harder with less damage and strain.
Best Value
60 Day Supply
$181.93
$259.85
$78 in Savings + $100 Product Rewards
Take Advantage of The Savings:
25% OFF Extreme Endurance
FREE Omega+D3
Team XND Membership
FREE 2x $50 Rewards
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60 Day Guarantee
Most Popular
60 Day Supply
$115.90
$179.85
$39 in Savings + $25 Product Rewards
Improve Your Fitness:
FREE Omega+D3
FREE $25 Gift Card
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60 Day Guarantee
Single Purchase
$67.95
$10 Product Rewards
Try out Extreme Endurance:
FREE $10 Gift Card
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60 Day Guarantee
Recover Faster, Live Better
Fights free radical damage & supports crucial cellular functions
Promotes anti-aging by reducing damaging oxidative stress
Increases aerobic threshold and VO2 max for a longer, healthier life
Starts working within 48–72 hours
100% Guaranteed & Backed by the Xendurance Promise
Scientific Efficacy: Proven by rigorous scientific research and tested by unbiased 3rd parties.
State-of-the-Art Manufacturing: We only partner with Good Manufacturing Practice (GMP) certified and/or equivalent facilities.
Accessibility for All: We strive to make our product line available to athletes of all abilities!
Certified Drug Free By Informed Sport: 3rd party tested to guarantee free of banned substances
