Say Hello To Vanilla
Sustained Energy
"The new Vanilla is the perfect mild and sweet flavor to keep me fueled for hours"
No Stomach Drama
"Goes down easy and never upsets my gut."
Perfect Flavor
"The light vanilla flavor doesn’t get old, even after multiple servings."
“The Ferrari of sports-supplement companies.”
“First Endurance produces supplements that deliver on their promise, thanks to clinically proven dosages of endurance boosting ingredients.”
Substantial Carbs Per Hour
“EFS-PRO hits the mark when it comes to easiness on the gut.”
The Best Mix Out There
"Even at 120 grams of carbs per 24 oz, it doesn’t taste overly sweet or strong."
Game Changer
"The new EFS-PRO formula is a game changer!"
Latest Posts
Unleashing Your Full Potential: Why Iron is a Non-Negotiable Foundation
By Jennifer Kurtz, PhD, CISSN, CSCS, EP-C
Heavy legs on an easy run or a heart rate that doesn't behave how you expect isn't always about fitness. Iron is foundational to oxygen delivery and storage and plays a key role in expressing the fitness athletes build.
The Science of Tart Cherry: How Anthocyanins Accelerate Recovery
By Jennifer Kurtz, PhD(c), CISSN, CSCS, EP-C
Tart cherry isn’t just a recovery trend. It’s a proven tool for helping endurance athletes manage soreness, inflammation, and the toll of hard training.
Hannah Otto Digs Deep on Mauna Kea
With Hannah Otto
Hannah Otto went to the big island to chase the Mauna Kea FKT, but it almost fell apart. She talks pacing, fueling at 100g+ carbs/hour, battling a relentless headwind, and the mental shift that turned a potential disaster into the biggest margin of her FKT career.
