
“Proving there was a market for high-end nutritional supplements for distance freaks, First Endurance has found success in becoming the Ferrari of sports-supplement companies.”

“First Endurance produces supplements that deliver on their promise, thanks to clinically proven dosages of endurance boosting ingredients.”

“First Endurance has chosen to bypass the mainstream and focus on the pointy end of the market – investing in top grade ingredients, production, and the right people to create a better grade of nutrition specifically for endurance athletes.”
Latest Blog Posts
Branched-Chain Amino Acids: Fuel for the Finale
By Dr. Luke Bucci, PhD
When used correctly, branched-chain amino acids (BCAAs) help improve exercise performance after hours of grueling effort. Late in the race, deep in the training session – those times when you need an extra reserve of energy the most.
Suntheanine®- Your Secret Weapon – Part 2
By Dr. Luke Bucci, PhD
This is the second installment in a series on the reimagined EFS and a mind-over-matter compound that makes perfect sense for maximizing your brain’s control of your exercise performance: Suntheanine® L-theanine.
Suntheanine®- Your Secret Weapon
By Dr. Luke Bucci, PhD
This is a first-in-series feature on the reimagined EFS, focusing on a mind-over-matter compound that makes perfect sense for maximizing your brain’s control of your exercise performance: L-theanine, or more specifically, Suntheanine® L-theanine.
Getting Somewhere while Going Nowhere
By Dr. Luke Bucci, PhD
Riding indoors is also radically different from riding outside.
In this blog installment, we share tips for how to approach fueling, recovery, and maintaining a mental edge during indoor training.
Latest Research: The Proven Performance of OptygenHP
By Dr. Luke Bucci, PhD
Dr. Luke Bucci lays out the latest research on the ingredients that are unique to OptygenHP's formula – ashwagandha and Senactiv® (which is a blend of adaptogens) – along with a kicker: beta-alanine.
Latest Research: The Clinical Case for Cordyceps
By Dr. Luke Bucci, PhD
Reviews of the Cordyceps research from the past two years, demonstrating Optygen’s impact on endurance athletes’ exercise output and general health.
“I immediately saw the difference in training. My heart rate dropped significantly and I was able to push harder at a lower heart rate.”
“I increased my Vo2 Max by 5 points in the first 10 weeks!
“Quite literally a game changer for endurance athletes looking to optimize their performance gains.”