Breakthrough Year!
“I immediately saw the difference in training. My heart rate dropped significantly and I was able to push harder at a lower heart rate.”
Game Changer
“Quite literally a game changer for endurance athletes looking to optimize their performance gains.”
Big Gains Fast
“I increased my Vo2 Max by 5 points in the first 10 weeks!

“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 Posts
WHAT IS CYCLIC CLUSTER DEXTRIN?
By Dr. Luke Bucci, PhD
Learn why Cyclic Cluster Dextrin, the primary fuel source in EFS-PRO, was chosen for its research-backed benefits.
Recovering Beyond Muscles
By Dr. Luke Bucci & Jeff Feliciano
How Ultragen provides the critical nutrients needed to facilitate recovery.
TRAINING TO PEAK WITH A STRUCTURED PLAN
By Dave Harward
Longtime coach Dave Harward discusses his approach to coaching athletes to peak for target events.
Adam and the Endurance Factory
By Adam Merry
Adam lays out the general training and nutrition plan that have led him to a season of notable results and a qualifying spot at his A race, Western States.
Replenishing muscle glycogen for maximal, faster recovery
By Dr. Luke Bucci & Jeff Feliciano
How Ultragen targets the critical 30 minutes immediately following exercise in order to maximize gains and minimize downtime.
Exercise, damage, repair, & the benefits of a recovery aid
By Dr. Luke Bucci & Jeff Feliciano
Learn about the process of recovery, and what you should – and shouldn’t – do in order to recover faster & realize bigger gains from your efforts.