Extreme Endurance

The World’s #1 Endurance Supplement for Stamina, Recovery and Soreness.

Clinically proven to:

  • Reduce Lactic Acid by 26% - Less Muscle Soreness
  • Reduce Oxidative Stress by 39% - Fights Free Radical Damage
  • Reduce Creatine Kinase by 6X - Faster Recovery

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Delivered every 12 months

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TRAIN HARDER. RECOVER FASTER. SET NEW PRS.

Proven by Clinical Studies

Trusted by 100,000 Athletes

Trust is EVERYTHING... That's why Extreme Endurance is used by world-class performers like Josh Bridges to help their chances to get on top of the podium.

Josh Bridges

There’s a noticeable difference in my soreness when I’m not on this product. There's a reason I’ve used this product for eight years!

Danielle Brandon

This is my secret that I don’t like to talk about. It’s my best recovery tool. 

Craig Engels

The one product I take daily and recommend to everyone is Extreme Endurance. It’s insanely effective and the clinical research backs it. If you want to improve your running this is by far the easiest thing you can do!

Extreme Endurance vs the Competition

When it’s time to unleash your inner-Hercules and bounce back stronger than ever… Its very hard to beat the results you will feel with Extreme Endurance.

BENEFITS XND OTHERS

Proven by rigorous scientific research and tested by unbiased 3rd parties.

Proven to reduce lactic acid by 26%

Proven to reduce oxidative stress by 39%

Informed-Sport Certified

Made in the U.S.A & backed by our 100% 30-day money back guarantee.

Getting the most out of Extreme Endurance

Frequently Asked Questions

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.

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