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 1790 reviews
87%
(1564)
5%
(96)
2%
(39)
1%
(24)
4%
(67)
L
Lisa Hanard
After 6 weeks I really notice a difference in my endurance

My heart rate is about 25 or 30 bpm lower doing the same bicycle rides and routes after 6 weeks on Extreme endurance. I notice that I can cycle further and feel overall more confident! Both road cycling and mountain biking have improved!

Awesome! Thank you for taking the time to share your experience with Extreme Endurance. We are thrilled to hear that you have noticed a significant improvement in your endurance and overall performance after weeks of using our product. We hope to continue helping you reach your goals and increase your confidence. Keep up the amazing work!

C
Chelsey Perkins
Great product!

Started taking this product while training for a full marathon and felt great through my training and through my race. I was able to meet my goal and recover quickly!

Thank you for your review! We are thrilled to hear that you have been seeing great results in your training and recovery after using Extreme Endurance. We strive to provide products that deliver on their promises, so it's great to hear that our product is working for you. Keep up the great work and good luck on your future races!

B
Bruce Beaton
Love it!!!!

I have definitely noticed a difference in my cardio capacity since I began taking Xendurance!

Thank you for taking the time to share your experience with us. We're so glad to hear that you've noticed great improvements while using Extreme Endurance! We hope that you continue to see great results with our product. 💪 Keep pushing to the extreme!

M
Martin Cox
Great stuff

Less fatigue and sore muscles overall. Skeptical at first as most should be, cool part is the **** works!

Thank you for your review! We're so glad to hear that you're loving our Extreme Endurance product. It's always great to hear from a satisfied customer. We understand that it can be hard to believe in a new product, but we're happy to hear that it's working for you. Keep pushing through those tough workouts!

W
WayneR
Improved Endurance less cramping

I have not seen an increase in VO2 Max, however, post race/competition recovery has improved. Just finished a 14 mile mountain race with over 6000 feet of elevation gain. Cramping was minimal as compared to last year with 10 minutes off my time.

Thank you for your review of our Extreme Endurance product! We're thrilled to hear that it has improved your endurance and reduced cramping during your intense mountain race. We understand the importance of post-race recovery and we're glad to hear that our product has helped with that. Keep up the great work and we wish you continued success in your races.

A
Amanda K
Feel like I can push myself harder

Was very skeptical but within a week I have already noticed that my recovery is shorter between runs and I still have plenty left in the tank at the end of a long run or a high mileage week. Excited to see how my racing improves throughout this training cycle. My muscles don’t feel tired. I ran 10 miles a whole minute per mile faster a week apart.

Thank you for sharing your experience with Extreme Endurance! We're glad to hear that you have noticed a difference in your recovery time and energy levels while using our product. Keep up the great work with your training and we are excited to see how your racing improves. Cheers to pushing yourself harder!

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