EFS Electrolyte Drink
So much more than just a hydration mix
The new EFS provides premium nutrition that supports physical and mental performance for elite athletes, redefining the limits of endurance nutrition so you can redefine the limits of endurance.
✓ Improves mental toughness & sharpens your competitive edge
✓ Prevents cramping & helps you hydrate fast
✓ Provides immediate & sustained fuel when you need it most
100% MONEY BACK GUARANTEE
Orders start shipping 12/1
NOTE: Because this is a small production run there is no neckband. There is a sealed liner inside the lid.
A new way of thinking
When we think about endurance sports, we don’t typically think about thinking, but anyone who’s had their motivation crushed by an obstacle—a looming climb, a 90-degree turn into a headwind, another gap to close—knows that mental toughness and presence of mind at critical moments are almost as important as fitness.
That’s why we designed the new EFS to increase Alpha brain waves while decreasing Beta brain waves so you’ll have the mental toughness it takes to push your body to the limits when it matters most.
“It tastes great and I love the way it made me feel.”
“Definitely love the new flavors of EFS.”
- Theanine boosts mental toughness to help you push through suffering
- Industry-leading electrolyte content—nothing is better at preventing cramps
- Carbs from multiple sources provide immediate and sustained fuel
- 7% osmolality ensures bioavailability and reduces GI distress
- Citric and malic acids promote oxygen uptake and energy production
- New taste profile eliminates the flavor vs function compromise
All you need to push your limits
In addition to unlocking the mental game, EFS pushes cramp prevention and continuous fueling to new levels.
It includes all five electrolytes totaling 1,160mg. That’s twice the amount of traditional mixes, and—since we improved the flavor—it tastes great at full concentration (or beyond).
There’s no need to dilute it and supplement with electrolyte tabs just to make it palatable. It’s also got more carbs from more sources, including complex carbs for prolonged energy and high-glycemic carbs for immediate use.
“I sweat a lot on the trainer and I don’t have to worry about cramping or adding more salt when using the new EFS. Felt well hydrated and felt like I was meeting my caloric needs to fuel the session.”
Bioavailability is the best ability
From the carbohydrates (osmotically balanced with your body in a 7% solution) to the electrolytes (20-100% better absorption rates), every ingredient in EFS is selected and portioned for faster and easier absorption without GI distress.
The inclusion of citric and malic acids also encourages oxygen uptake and production of ATP (the body’s energy source), helping your cells use the fuel once it’s delivered.
We prioritize purity by using only Suntheanine, the original and cleanest L-theanine, and free-form amino acids, which have a purity level of 99-100%.
We also omit ingredients with no value—even the ubiquitous vitamin C, which features in virtually every other mix despite research that shows it reduces endurance when taken during exercise. EFS still provides immune system support courtesy of theanine, just without impacting performance.
No respect for the status quo
Our approach to product design eschews unexamined ingredients, traditional processes, and trendy minimalism in favor of research-based innovation, premium ingredient sourcing, and the uncompromising expectations of elite athletes. We’re always ready to show our work and support our products with the scientific literature that informs our design choices, but we also know what virtually every athlete and publication using or reviewing our products learns firsthand: First Endurance products speak for themselves, and you can feel the difference right away.
A system that puts endurance first
EFS is for use during exercise to prevent cramps, maintain fuel levels, and support mental toughness when it’s needed most. It can be supplemented with Liquid Shots and PreRace before and during an event, respectively, and Ultragen helps consolidate gains during recovery between sessions.
Regardless of your training load, a daily dose of our MultiV and Optygen lines help you lay a foundation to achieve your goals.
“On-the-bike taste was great. I felt amazing on the bike today! I had a PR on the top half of the climb. Surprised by this, because I had skied hard the day before.”
Locked in a Vault – Coming Soon
Serving Size: 1 scoop (32 g)
Servings per Container: 30
|Amount Per Serving||%DV|
|Calories-110 Calories from fat-0|
|Total Carbohydrate||26 g||9%|
|Calcium (as DiCalcium Malate)||100 mg||8%|
|Magnesium (DiMagnesium Malate)||150 mg||36%|
|Chloride (as sodium chloride)||450 mg||20%|
|Sodium (as sodium chloride)||300 mg||13%|
|Potassium (as di-potassium phosphate)||160 mg||3%|
|Branched Chain Amino Acids (L-Leucine, L-Isoleucine, L-Valine)||250 mg||*|
|*Daily Value Not Established
**Percent Daily Values are based on a 2,000 calorie diet.
Q: I am prone to cramping during longer training and racing. Will EFS help me with cramping problems?
A: Nutritionally, cramping stems from electrolyte imbalance, electrolyte depletion and/or dehydration. EFS provides the most potent electrolyte profile available. The combination of all five electrolytes delivers a potent 1160mg per serving, helping to prevent cramping. The 300mg sodium per serving also aids in maximum fluid absorption so you stay hydrated throughout your training and racing. Supplementing with additional salt tabs, electrolyte tabs, or salty snacks is no longer needed when using EFS.
Q: How much EFS should I use during my training and racing?
A: Clinical research shows that a 6-8% solution delivering between 45-60g carbohydrates, >1000mg amino acids, 400-600mg sodium and equivalent balance in all electrolytes should be taken every hour during exercise. Athletes should consume one serving for every 30 minutes of intense exercise. Adjustments should be made based on body weight, training state, heat, individual sweat rates and preference. Use one serving for every 30 minutes as a starting point and adjust as necessary from there. Additional calories and electrolytes can be added with EFS liquid shots.
Q: I’ve heard that there are benefits to having protein during exercise. Why doesn’t EFS contain protein?
A: EFS contains 2g free form amino acids per serving which is the equivalent in BCAA and glutamine profile to 9g whey protein. Protein naturally contains BCAAs and glutamine.
Clinical evidence supporting the use of BCAAs and glutamine during exercise dates back to 1991. These clinical studies clearly indicate supplementing with as little as 1g free form amino acids improved performance, reduced post-exercise muscle damage, improved muscle glycogen resynthesis, reduced central fatigue and improved rate of perceived exertion. These are the same claims made by the most recent protein study and clearly support a mechanism for improved performance.
In addition to the clinical support, other factors lead to a decision to use these free form amino acids over complete proteins.
- Proteins are more difficult to digest than amino acids during exercise
- Proteins don’t taste very good during exercise
- Proteins can reduce the glycemic index of a drink, further reducing its ability to be quickly absorbed
- There is considerably more evidence supporting free form amino acids than complete proteins