We started First Endurance in 2002 because we recognized, firsthand, that the nutrition available to endurance athletes could be better – A LOT BETTER.

The idea was simple. We wanted to give serious endurance athletes access to formulas that are designed for one specific reason-to maximize endurance performance. We spare no expense in developing the best, cutting-edge, scientifically validated, high-performance racing formulations. 

With this approach, we’ve been redefining the boundaries of endurance since 2002 and look forward to continuing to help athletes take their training and racing to the next level.



If you’re not satisfied, we don’t expect you to pay. Return it within 30 days for a refund or credit. It’s that simple.


We collaborate with our team of athletes and doctors to evaluate new product concepts, develop cutting-edge technology and meticulously test new product prototypes in the most-demanding races in the world.


First Endurance is committed to advancing the state of the art. First Endurance’s competitive strategy is based on having the best, patentable, formulations, technologies and delivery systems available.


We can’t get it out of our system. We’re driven by our passion for racing and our desire to push ourselves further.

We’ve spent more time packed in a car going to early-morning races, have slept on more floors, and have stayed in more hotels than we care to remember. We wouldn’t trade it for anything.

Most importantly – we know what it takes to win races. We know what it feels like when everything works out just right. We understand the work ethic, sacrifices, and dedication that go into every victory.


That’s why we’re constantly looking for innovative ways to help athletes maximize performance and give them a competitive advantage. We’re relentless in our efforts to stay at the forefront of endurance performance.


Research is the most important value at First Endurance. We are driven by a desire to ensure our products are proven to enhance endurance performance and have scientific validation.

At First Endurance, we refuse to reduce costs by using “pixie dust” amounts of ingredients just to dress up the label. Our formulations utilize the same levels (sometimes more) of the active ingredients that were used in the actual human scientific research. We are meticulous about research and go out of our way to make sure we have addressed each of our stringent requirements. All products that First Endurance develops are based on human scientific research.


First Endurance uses only the finest ingredients and follows stringent quality control. Supplements can be easily ruined. Even if you buy the right ingredients, they can degrade quickly and loose their efficacy if they aren’t handled under the most stringent controls.

We are determined to ensure nothing goes wrong with any step of the way. For example, OPTYGEN is packaged in an amber glass bottle and utilizes colored capsules to reduce UV light, oxygen and moisture degradation, ensuring the highest quality, potency, and purity. Focus- At First Endurance, we are centered on endurance performance.

Because we only focus on developing high-performance endurance formulations, we are the best at what we do.