Xendurance is a sports nutrition company that was started in the US in 2006 when the formula, Extreme Endurance was under development. The parent company, Lifespan International US., is located in Carefree, Arizona. Lifespan's goal was to develop an all-natural, drug-free product, which would improve an athlete's performance by improving both aerobic and lactate acid threshold. Xendurance also wanted to develop a formula that would safely reduce the “culprit" known as lactic acid.
Lifespan International recognized that athletes not only benefit from performance products but they also need to protect their health and immune systems from the trauma of rigorous training schedules. With that in mind, Lifespan continuously expands the Xendurance product line of power-packed multi-vitamins, omega and joint formulas, protein and electrolyte drinks, with unique formulas backed by science.
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