Xendurance - 180 Tablets - Exp 06/18

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Xendurance (Extreme Endurance), a trailblazing athletic performance and endurance supplement formulated by athletes for athletes.  Natural, safe and clinically proven to increase aerobic threshold and reduce lactic ac

XENDURANCE, (also known as Extreme Endurance in the US), is a revolutionary athletic performance formula created by athletes for athletes. It's natural, safe and includes clinically proven ingredients.

Each batch of Xendurance is tested to ensure that it is not contaminated with banned substances to provide additional reassurance for elite athletes.


As an athlete you already know the harder you exercise and compete, the more acid builds up in your muscles. Both your blood and muscle pH goes down into the dreaded acid zone. The increased use of muscle glycogen for energy produces lactic and pyruvic acid. Acidity reduces muscle power and reduces physical and mental endurance. You, your trainers and your coaches refer to this as lactic acid buildup or lactic acid fatigue. On the practice and playing field, it is also called "hitting the wall" or having the "bear jump on your back". It's simple. The harder you compete, the quicker you Go Acid! The Athlete who "Goes Acid" last, wins the competition.

XENDURANCE - Athletic Performance Formula that Reduces Lactic Acid and Increases Aerobic Threshold.

During intense training, don't just "hit the wall" with muscle burn and pain - BLAST through it with Xendurance, a revolutionary athletic performance formula. It's clinically proven to increase aerobic threshold and reduce lactic acid.
All ingredients are in compliance for IOC, NCAA, NFL, NBA, NHL and MLB.

Tested for Banned Substances

Xendurance (Extreme Endurance) is tested by the largest sports lab in the world. HFL Sport Science is located in the UK and its testing of Xendurance is done using gaschromatography with mass spectrometric detection (GCMS) and liquid chromatography with mass spectrometric detection (LCMS). In layman?s terms, - if you put one drop of a banned substance in an olympic size swimming pool, this testing would find it. It is costly, but we have many pros who can not afford to have their tests come up positive. HFL?s newest testing programs for athletes are called Informed Choice (US) and Informed Sports (EU).

To summarize, there is not another product in the world that has a Gold-Standard, third party, clinical study, that has been published, and has been tested drug-free.

Pregnant and lactating women, diabetic, hypoglycemics and people with known medical conditions should consult a physician before taking this supplement.

Nutritional supplements do not replace a varied and balanced diet, which is essential together with a healthy way of life.

Store in a cool, dry place. Keep out of reach of children.

Do not use if safety seal is broken or missing.

4 tablets contain:  


6 tablets contain: 



907 mg


1360 mg



251,8 mg


344,60 mg



70 mcg


105 mcg



12 mcg


18 mcg



40 mg


60 mg



200 mg


300 mg



10 mg


15 mg



Extreme Endurance is designed to be used everyday, all year long.

If you train 5 to 6 times per week, take 6 tablets daily; 3 in the morning and 3 in the evening, with or without food.

Five to seven days before a race, increase your dosage to 8 tablets a day; 4 in the morning and 4 in the evening and continue this 8 tablets for one day after the race and then drop back down to 6 tablets per day. We suggest this as it helps immensely with recovery.

If you train 3 to 4 days per week, take a total of 4 tablets daily, with or without food.