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Xendurance
7000+ reviews
Boost Oxygen + Supercharge Your Energy Levels
From your morning run to the afternoon grind, Blood Fuel keeps oxygen flowing
Made from Organic Beetroot Powder
No Caffeine. No Crash.
60-Day Money Back Guarantee
Endorsed by:
Full Potency, Maximum Oxygenation:
Enhanced Endurance and Efficiency During Exercise
Helps delay fatigue and increases time to exhaustion
Bolsters Resilience Against Free Radicals
Strengthens the body's defenses against damaging free radicals
Promotes Increased Stamina
Helps your heart and lungs work better during exercise*
Naturally Improves Circulation
Enhances blood flow, optimizing oxygen delivery for peak endurance
Naturally Improves Circulation
Enhances blood flow, optimizing oxygen delivery for peak endurance
Clinically proven to increase blood flow to muscles during exercise
Reduces time trialed fitness tests by up to 3.0%
Blood Fuel is shown to increase blood flow to muscles during exercise
Reduces time trialed fitness tests by up to 3.0%
Ingredients at Research Level Dosages
Hormone-Free
Third Party Tested
Non-GMO
Organic Beetroot Powder
Boosts nitric oxied for enhanced endurance, improving blood flow and oxygen delivery to muscles
5,000 MG
Tart Cherry Powder
Anti-inflammatory properties help reduce post-exercise soreness and inflammation
Pomegranate Powder
Packed with powerful antioxidants that combat free radicals generated during high-intensity excersise
Blueberry Powder
Delivers high levels of anthocyanins to minimize muscle damage and enhance resilience against excercise-induced stress
Why You’ll Love It
Break Through Limits – Clinically proven to reduce lactic acid by 26%, helping you push through fatigue.
Boost Stamina & Endurance – Supports oxygen efficiency and aerobic capacity, so you can go further without burning out.
Scientifically Backed Formula – Developed with 12+ clinical studies, NSF Certified for Sport® and trusted by elite athletes.
Fight Oxidative Stress – Lowers oxidative stress by 39%, protecting your muscles from breakdown and improving long-term performance.
Description
Clinically Proven
Feel confident knowing Extreme Endurance meets the standards of all major professional, collegiate, and Olympic organizations worldwide. This all-natural electrolyte mineral supplement contains no banned ingredients and is thoroughly tested to ensure it’s free of prohibited substances.
Since 2008, elite athletes have trusted Extreme Endurance for top-tier performance. Now, cutting-edge research proves its benefits extend beyond the pros—anyone can thrive. It helps optimize body pH, bolsters cellular health, and combats free radical damage effectively.*
Clinical Studies:
Key Benefits
The Benefits of Daily Use:
26% Reduction of Lactic Acid -> Less Muscle Soreness / Improves Performance*
39% Reduction of Oxidative Stress -> Fights Free Radical Damage*
6X Reduction of Creatine Kinase (CK) -> Faster Muscle Recovery Time*
Increase in Aerobic Threshold -> Last Longer, Go Harder*
Start feeling the benefits within 72 hours*
Certified by Informed Sport*
Clinically Proven
Backed by 12 unique clinical studies (two of which are published, Gold Standard, double-blind and placebo-controlled).
Extreme Endurance is arguably the most researched and proven sports supplement in the world.
Natural & Tested For Banned Substances
Formulated with 100% natural ingredients for ANYONE of any fitness level.
What's Inside
Feel confident knowing Extreme Endurance meets the standards of all major professional, collegiate, and Olympic organizations worldwide. This all-natural electrolyte mineral supplement contains no banned ingredients and is thoroughly tested to ensure it’s free of prohibited substances.
We recommend avoiding extra high-dose magnesium supplements while using Extreme Endurance. The daily dose of 6 tablets already provides plenty of magnesium, and too much could reduce the supplement’s benefits. A standalone magnesium supplement of 300 mg or more is considered high-dose when taken with Extreme Endurance.*
Calcium Carbonate
Supports muscle, bone, and heart function.
Papain
Papaya enzyme that reduces inflammation and muscle soreness after exercise.
Magnesium
Supports muscle function, relaxation, energy production, and reduces fatigue.
Potassium
Prevents cramps, balances electrolytes, and supports recovery after sweating.
Catechins
Fights oxidative stress, protects muscle cells, and aids recovery.
Chromium / Selenium
Trace minerals supporting metabolism, growth, and recovery.
Usage
For maximum benefits, it's essential to use Extreme Endurance daily, much like a multivitamin. Research shows that the longer you take it, the greater the results, so make a commitment to consistent daily use—we've even had athletes relying on it for over 14 years without interruption.To achieve optimal results, follow these simple guidelines:
Morning: Swallow 3 tablets of Extreme Endurance with or without food.
Evening: Swallow 3 tablets of Extreme Endurance with or without food.
We recommend avoiding stand-alone magnesium supplements while using Extreme Endurance, as adding 300 mg or more isn't advised. You'll already receive an ample daily dose of magnesium from the 6 tablets.
BLOOD FUEL
4.71 Stars
2544 Reviews
In a clinical study 93.5% athletes perform better
Choose an option:
BUY ONCE FOR $48.95 + $6.95 SHIPPING
4.76/5
Money Back
GuaranteeSame Day
ShippingFor optimal results, maintain consistent use for 3-6+ months
Why You’ll Love It
Break Through Limits – Clinically proven to reduce lactic acid by 26%, helping you push through fatigue.
Boost Stamina & Endurance – Supports oxygen efficiency and aerobic capacity, so you can go further without burning out.
Scientifically Backed Formula – Developed with 12+ clinical studies, NSF Certified for Sport® and trusted by elite athletes.
Fight Oxidative Stress – Lowers oxidative stress by 39%, protecting your muscles from breakdown and improving long-term performance.
Description
Clinically Proven
Feel confident knowing Extreme Endurance meets the standards of all major professional, collegiate, and Olympic organizations worldwide. This all-natural electrolyte mineral supplement contains no banned ingredients and is thoroughly tested to ensure it’s free of prohibited substances.
Since 2008, elite athletes have trusted Extreme Endurance for top-tier performance. Now, cutting-edge research proves its benefits extend beyond the pros—anyone can thrive. It helps optimize body pH, bolsters cellular health, and combats free radical damage effectively.*
Clinical Studies:
Key Benefits
The Benefits of Daily Use:
26% Reduction of Lactic Acid -> Less Muscle Soreness / Improves Performance*
39% Reduction of Oxidative Stress -> Fights Free Radical Damage*
6X Reduction of Creatine Kinase (CK) -> Faster Muscle Recovery Time*
Increase in Aerobic Threshold -> Last Longer, Go Harder*
Start feeling the benefits within 72 hours*
Certified by Informed Sport*
Clinically Proven
Backed by 12 unique clinical studies (two of which are published, Gold Standard, double-blind and placebo-controlled).
Extreme Endurance is arguably the most researched and proven sports supplement in the world.
Natural & Tested For Banned Substances
Formulated with 100% natural ingredients for ANYONE of any fitness level.
What's Inside
Feel confident knowing Extreme Endurance meets the standards of all major professional, collegiate, and Olympic organizations worldwide. This all-natural electrolyte mineral supplement contains no banned ingredients and is thoroughly tested to ensure it’s free of prohibited substances.
We recommend avoiding extra high-dose magnesium supplements while using Extreme Endurance. The daily dose of 6 tablets already provides plenty of magnesium, and too much could reduce the supplement’s benefits. A standalone magnesium supplement of 300 mg or more is considered high-dose when taken with Extreme Endurance.*
Calcium Carbonate
Supports muscle, bone, and heart function.
Papain
Papaya enzyme that reduces inflammation and muscle soreness after exercise.
Magnesium
Supports muscle function, relaxation, energy production, and reduces fatigue.
Potassium
Prevents cramps, balances electrolytes, and supports recovery after sweating.
Catechins
Fights oxidative stress, protects muscle cells, and aids recovery.
Chromium / Selenium
Trace minerals supporting metabolism, growth, and recovery.
Usage
For maximum benefits, it's essential to use Extreme Endurance daily, much like a multivitamin. Research shows that the longer you take it, the greater the results, so make a commitment to consistent daily use—we've even had athletes relying on it for over 14 years without interruption.To achieve optimal results, follow these simple guidelines:
Morning: Swallow 3 tablets of Extreme Endurance with or without food.
Evening: Swallow 3 tablets of Extreme Endurance with or without food.
We recommend avoiding stand-alone magnesium supplements while using Extreme Endurance, as adding 300 mg or more isn't advised. You'll already receive an ample daily dose of magnesium from the 6 tablets.
TRUSTED + VALIDATED
By World Class Athletes
Slide 1 of 4Take a Look Inside
Clinically Verified
First US company to use trusted global testing method
Gluten Free Preservative Free
Safe for celiacs and no bad fillers.
Zero banned
ingredientsIt’s an all-natural dietary supplement.
Made in
the USAProudly made and owned in the USA.
5-STAR REVIEWS
Slide 1 of 6TEST+ Male Libido Enhancements:
Several Additional Libido and Reproductive Health Benefits
167% Increase in Sperm Count
53% Increase In Semen Volume
57% Increase In Sperm Mobility
17% Increase in Serum Testosterone Levels
167% Increase in Sperm Count
53% Increase In Semen Volume
57% Increase In Sperm Mobility
17% Increase in Serum Testosterone Levels
Blood Fuel vs.
Multi-ingedient natural supplement will have numerous advantages over peers
Slide 1 of 0Product A
Boosts nitric oxide for improving blood flow and oxygen delivery to muscles
Anti-inflammatory benefits that help reduce post-exercise soreness and inflammation
Antioxidants, combats free radicals generated during high-intensity exercise
Anthocyanins to minimize muscle damage and helps reduce exercise-induced stress
Certified Drug Free by Informed Sport
$48.95
/mo.
Others
$100+
/mo.
5 Grams Organic Beet Root
5 Grams Organic Beetroot
Non-gmo, soy & dairy free, no artificial colors, flavors or artificial sweeteners, no caffeine or stimulants
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!
60-Day Guarantee
FAQS
How does beetroot powder help with oxygen deliver to the blood?
Beetroot powder enhances oxygen flow and boosts blood flow primarily through its rich nitrate content, which the body converts into nitric oxide (NO)—a potent vasodilator that relaxes and widens blood vessels for improved circulation. This process facilitates greater oxygen and nutrient delivery to active muscles during exercise, reducing the oxygen cost of submaximal efforts and enhancing endurance by optimizing gas exchange and muscle efficiency.
What is the best time to take Blood Fuel?
The best time to consume Blood Fuel is typically 2-3 hours before intense workouts or athletic events. This timing allows dietary nitrates from the beetroot to be metabolized into nitric oxide (NO), with plasma nitrite levels peaking around this window to optimize vasodilation, enhance blood flow, and improve oxygen delivery to muscles, thereby boosting endurance and performance while reducing the oxygen cost of exercise.
This pre-workout window aligns with its beetroot-driven benefits, though its additional antioxidants (from pomegranate, blueberries, and tart cherry) help provide ongoing recovery support if taken consistently daily; individual factors like dosage and training status can influence exact timing.
Can you take Blood Fuel if you aren't an athlete?
Yes, Blood Fuel can be used by non-athletes for general daily energy support, as its natural ingredients offer broad health benefits beyond athletic performance, including enhanced circulation, reduced inflammation, improved sleep quality, and antioxidant protection that contribute to overall vitality and sustained energy levels.
Beetroot is usually tart and doesn't taste that good?
Yes, Blood Fuel differs from typical beetroot powders by blending it with tart cherry, pomegranate, blueberries, and lemon powder, which together create a more balanced, berry-forward flavor profile that softens the inherent earthiness and tartness of beetroot while adding natural sweetness and fruity notes for a smoother, more enjoyable taste.
Can this be combined with other Xendurance products?
Yes, Blood Fuel can generally be combined with other Xendurance products, as the company's supplements are formulated to work synergistically together. However, as with all supplements, it's best to check for any excess or duplicate ingredients that could lead to consuming too much of any one component, and consult a healthcare professional for personalized advice.
Keep your Blood Flowing
Stop making excuses. Stay young and perform at your best.
Proudly owned, manufactured and shipped in the USA, since 1998.
Get in touch: info@xendurance.com*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
