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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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.


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.

Customer Reviews

Based on 1633 reviews
Emily Quintanilla
Love this supplement!

I have virtually no soreness. I recover much faster, my VO2max has improved, and performance is much better. I will be buying more and become a member.

Thank you so much for your review! We're thrilled to hear that you're loving our Extreme Endurance supplement. It's great to know that it's helping with your recovery and overall performance. We appreciate your support and look forward to having you as a member. Keep up the great work!

Reaux Brill
The Review of all reviews

As I was taking my last 3 tabs this morning I thought, “ I gave it my best shot, and I haven’t felt any real difference in my training, definitely nothing that would motivate me to re-order” I go for my run (8miles) it was only suppose to be 6, but I was feeling pretty good. Afterwards, I checked my stats and my VO2 increased! 🥳 I had been working on this… it seems like forever. So not only have I re-ordered, I’m a member! 💪

Awesome! Thank you for taking the time to share your success with our Extreme Endurance product. We're thrilled to hear that our product has made a difference in your training and helped improve your VO2 levels. We always aim to provide top-notch results for our customers, and we're so happy to have you as a member. Keep pushing to the extreme!

Better recovery

I’ve only taken this about 10 days. I have noticed less overall soreness. I’ve been building mileage the past 2 weeks so I’m still sore and tired, but I think I’m recovering better. I have not noticed any improvement in stamina while training yet.

Thank you for sharing your experience with Extreme Endurance! As you continue to build your mileage, we hope that our product will continue to help you recover better. While stamina improvements may take some time to notice, we are confident that you will see results in your training soon. Keep up the great work!

Brandy Y
Great product. New increases in FTP!

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!

Thanks for choosing Extreme Endurance! We're thrilled to hear that you finally gave it a try and are seeing such incredible results in such a short time. We hope you continue to see great improvements with our product. Keep pushing to the extreme!

XC Mountain Biking

great product. I could defiantly feel the difference after a long race.

Thanks for choosing Extreme Endurance! We are so glad to hear that our product has been providing you with positive results. Our goal is to provide our customers with the endurance and energy they need to excel in their chosen sports and we're thrilled to hear that it made a noticeable difference during your long XC mountain biking race. Keep crushing those races!

Micah Dunlevy
5 Way Bypass open heart surgery

50 weeks ago, family genetics caught up to me. Fortunately I caught it before a heart attack or stroke. I had my first surgery of my life a 5 way bypass. I had been training for the last seven years, trail running, mountain biking, road cycling, CrossFit, strength training and SUP. I had tried Xendurance prior and was pleased with. Now 50 weeks post surgery this product is tremendously helping get back my endurance, stamina and strength!

Thank you for sharing your experience with Extreme Endurance. We are so glad to hear that it has been helpful in your recovery journey after undergoing such a major surgery. We are honored to be a part of your fitness journey and are happy to see that our product has helped you get back on track. We wish you continued success in your health and fitness goals. Keep up the amazing work!

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