Feedback

"First Endurance takes the next step in active fluid replacement with EFS. This product combines carbohydrates, electrolytes and Glutamine in a flavorful drink that is not heavy or too sweet. I feel great when I ride hard with this product, and never with a heavy stomach. EFS is a "championship" quality product, and I trust it to bring me to the finish line with the ability to win."
-Ben Jacques-Maynes (Sierra Nevada Professional Cycling Team)

"All around, EFS is definitely the best energy drink on the market."
-Neal Henderson MS, CSCS

"I really like EFS and will use it for Kona this year."
Heather Gollnick (3X Ironman Champion)

"I really like the new energy drink and am going to race with it for ½ Ironman Great Floridian and Ironman Florida."
-Peter Kotland (4X Ironman Champion)

"EFS a winning combination of optimal electrolytes, rapid and sustained energy with a very subtle flavor that is far superior to its competitors. This formula uniquely includes amino acids, a mix of fast and slow uptake sugars, and more electrolytes than other sports drinks. Beyond the science, this formula is refreshing, does not leave a coating in your mouth (or your bottle), and it has made me feel like doing extra hill sprints while waiting for my friends during an epic mountain bike ride. First Endurance has created an exciting new formula that delivers extra energy and nutrients to help you optimize your endurance exercise performance."
-Sally Warner, PhD

"I am particularly impressed with the tangerine flavored EFS. It tastes much better than other orange-flavored sports drinks."
-Andrea Hannos (Rona Professional Cycling Team)

"With EFS, I get stronger as the race goes on and feel unstoppable on the run. EFS helps me prevent the late-race bonk."
-Josiah Middaugh (2004 US Xterra National Champion)

"I love the light yet great taste of EFS. The high levels of electrolytes have practically prevented all my cramping. I used EFS at Nationals this year and won by 5 minutes while breaking my old course record!"
-Jamie Whitmore (3X US National Xterra Champion)

"EFS works well and I really like the taste. I'll use it for Ironman Hawaii for sure."
-Raynard Tissink (3X Ironman Champion)

"EFS works great. I feel good the whole race. I never felt like I'm fading."
-Jimmy Archer (Professional Triathlete)

"EFS works great, I am very pleased with the results."
-Bob Seebohar MS, RD, CSCS