First Endurance offers safe and legal sports nutrition products that are developed to help endurance athletes optimize performance. At First Endurance, we have researched, studied and experienced, firsthand, the dramatic impact specific ingredients can have on endurance and performance. We believe the best way to test new product prototypes is by getting them in the hands of the athletes. We solicit constant feedback from our athletes and use this feedback to stay at the forefront of endurance performance. This collaboration allows our Research and Development team to continue to push the limits of endurance. The result: breakthrough endurance nutrition that’s second to none.With First Endurance, you’ll be able to race harder and recover faster than ever before. There’s also a 100% guarantee.