Xendurance

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.

A man running on a track during a race wearing a blue and white uniform.

#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.

Runners on a track, crouched in starting position, ready to race.

#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.


Goodbye Soreness

Hello Performance

GOODBYE SORENESS
HELLO PERFORMANCE

Increase Performance

Improve Power & Vo2 Max 10-25%

Recover Faster

6X Reduction of Creatine Kinase

Less Muscle Soreness

26% Reduction in Lactic Acid

Endorsed by:

Proven In

12 Clinical Studies

Recover Faster

Fights free radical damage & supports crucial cellular functions.

Stamina Increase

Push your limits to go the distance, fight fatigue and set PRs.

Increase Power

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

Deeper Breaths

Increase VO2 Max & Aerobic Threshold. Perform better for longer.

Deeper Breaths

Increase VO2 Max & Aerobic Threshold. Perform better for longer.

Reduce Lactic Acid

Extreme Endurance reduces lactic build up after intense workouts.

Age Slower

Promotes anti-aging by reducing damaging oxidative stress.

As proven in:

Journal of Athletic Achievement

ENA Conference, Vienna Austria

ENA Conference, Vienna Austria (2010)

Journal of Athletic Achievement (2016)

Trusted by

WORLD CLASS RUNNERS

How to

Improve in 72 Hours

Perform a baseline workout.

Take 3 tablets in the AM and repeat in the PM. Train regularly.

Feel benefits in 72 hrs and redo baseline workout.

Take a Look Inside

Extreme Endurance is fully compliant and:

Informed Sport
Certified

First US company to use trusted global testing method

Gluten Free Preservative Free

Safe for celiacs and no bad fillers.

Zero banned
ingredients

It’s an all-natural, electrolyte mineral supplement.

Made in
the USA

Proudly made and owned in the USA.

TRY our XND INTRO OFFER TODAY

XND INTRO OFFER

60 Day Money Back Guarantee

60 Day Starter Pack

$183.85

$119.90

SAVE $63.95

Experience the World’s #1 Supplement for Stamina, Performance & Recovery.

Try the 60 Day Pack and get:

FREE Omega+D3

FREE $25 Gift Card

2 x Packs of Extreme Endurance

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