Xendurance

GOODBYE SORENESS HELLO PERFORMANCE

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

GOODBYE SORENESS HELLO PERFORMANCE

TRUSTED BY WORLD CLASS ATHLETES

  • DANIELLE BRANDON

    3x CROSSFIT GAMES ATHLETE

  • MATTHEW CENTROWITZ

    OLYMPIC GOLD MEDALIST

  • JOSH BRIDGES

    FORMER NAVY SEAL & CROSSFIT GAMES ATHLETE

  • CRAIG ENGELS

    1500M US TRACK TEAM

  • DONOVAN BRAZIER

    800M WORLD RECORD HOLDER

  • DANIELLE BRANDON

    4x CROSSFIT GAMES ATHLETE

  • MATTHEW CENTROWITZ

    OLYMPIC GOLD MEDALIST

  • JOSH BRIDGES

    NAVY SEAL & CROSSFIT GAMES ATHLETE

  • CRAIG ENGELS

    1500M US TRACK TEAM

  • DONOVAN BRAZIER

    800M WORLD RECORD HOLDER

PROVEN IN 12 CLINICAL STUDIES

RECOVERY TIME IMPROVEMENT

After intense workouts our muscles might be sore for days after. Extreme Endurance reduces lactic acid buildup 

STAMINA INCREASE

Extreme Endurance helps you push your limits and go the distance, fight fatigue and set PRs

INCREASE POWER

Increase power output by 10-25% with a similar heart rate

DEEPER BREATHS

Proven to increase VO2 Max and Aerobic Threshold

Journal of Athletic Achievement (2016)

ENA Conference, Vienna Austria (2010)

Clinical Results

26%

Reduction in Lactic Acid

39%

Reduction in Oxidative Stress

6X

Reduction in Creatine Kinase (Muscle Trauma)

IMPROVE IN 72 HRS

1

Perform a baseline workout

2

Take 3 tablets in the AM & 3 tablets in the PM and train regularly

3

Feel benefits in 72 hours + redo baseline workout

60 Day Supply

$179.85

$115.90

$39 in Savings

$25 Gift Card

FREE Omega+D3

FREE $25 Gift Card

SAME DAY SHIPPING

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JOIN 300,000 CUSTOMERS OVER 10+ YEARS

Customer Reviews

Based on 1085 reviews
89%
(971)
6%
(64)
2%
(17)
1%
(8)
2%
(25)
L
Lars Voit
Legit product.

Extremely improved performance really can notice the difference especially on the assault bike. A must for any CrossFit athlete.

R
Ron Brown
Amazing!

This product is amazing! Did my first Ironman with it and I didn’t even feel that very tired afterwards. Recovery was amazingly fast!

Hi Ron,

Thank you for your kind words! We're so glad that this product was able to help you achieve your goals.

P
Philip Clark
Was skeptical at first?

Having a Master's degree in exercise science, I'm always skeptical when trying supplements even when I know the research behind them. I am happy to say that I have been very pleased with the results I've gotten from using xendurance. After using xendurance for 3 or 4 days, I noticed that I wasn't as sore after a hard gym session. Additionally, I noticed that my heartrate was five to six beats lower on zone two bike rides despite pushing the same amount of watts or even slightly higher. On a recent bike ride I beat my personal best time up an eight mile climb that averages just under 6 % grade by 9 minutes. Amazing! I am sold on this product and highly recommend it to anyone wishing to increased their performance and recovery.

HI Philip,

Thank you for your review of Extreme Endurance! We are thrilled to hear that you've found the product helpful and that your results have been positive. We recommend that you continue to use Extreme Endurance to reach your fitness goals!

A
Andrew Renschen
Will not go without it.

I started taking extreme endurance about six months ago after I started CrossFit. I have made some insane progress in that time and I can absolutely tell a difference while incorporating EE. this was especially evident when I ran out, the week that I didn’t have it I was dogging in my workouts. I won’t run out again!

J
Jose Torraca
Best thing ever!

I’m 41 years old and I’ve been using this product for a while now. I can honestly say you won’t find anything better out there to help you out with lactic acid and soreness. I workout 7 times a week and it’s been in great part thanks to this!

Hi Jose,

Thank you for your review! We're glad to hear that our product has helped you out and that you find it helpful.

C
Cristina C.
Blown away by the results!

I was a little bit skeptical at the beginning about the results you could get from the extreme endurance and Lean + until I found myself running 17 miles 2 weekends in a row!! The most o was able to run before was a half marathon and with huffing and puffing, not I ran 17miles and the next day I was ready for another workout! I’m hooked!!

Hi Christina,

Thank you for your positive feedback! We're so happy to hear that you're enjoying the results of our product. We hope you'll continue to use it to achieve your fitness goals.

RECOVER FASTER

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

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