The Xendurance Performance System was scientifically engineered and scientifically developed to systemically address the biochemical changes that occur to an athlete's body during intense exercise and competition. These changes don't discriminate. They happen to every athlete and encompass a wide range of internal disruptions such as increased body acid, microscopic tears and trauma to the muscles, oxidative stress, inflammation and suppression of the immune system. That's why pharmaceutical grade compounds, systematically engineered, are added to our performance formula to help neutralize these biochemical changes. The bottom line is this product is backed by science and proven to work by world-class athletes.

Xendurance is manufactured in a NSF Certified facility is Tested for Banned Substances by the world's largest sports drug laboratory. In a Gold-Standard, double-blind, placebo controlled study, aerobic threshold increased by double digits and lactic acid was reduced by 15%.