"First Endurance has made me faster. I recover better and can train harder and more consistently. Now I go into races confident that my nutrition is going to work."
-Trevor Wurtele (Ironman Champion)
With the highest electrolyte content available, EFS drink mix provides everything you need to maximize endurance and performance during exercise.
EFS drink mix provides everything you need to maximize endurance and performance during exercise. You’ll notice the difference right away too. With the latest amino acid technology, superior mineral bioavailability and the addition of Malic Acid, EFS drinks refuel working muscles faster than ever before. Plus they taste great, not chalky or overpoweringly sweet.
With the highest electrolyte content available (1160mg of all 5 electrolytes/serving), there’s no need to carry those extra electrolyte pills or add anything else. You can train and race with confidence knowing you don't have to worry about cramping or dehydration. Times have changed.
Q: What is EFS?
A: EFS is a new energy drink that provides endurance athletes with the nutrients they need to fuel working muscles and increase endurance during exercise. The EFS formula utilizes the latest clinical research on endurance nutrition and input from some of the best endurance athletes in the world.
Q: Why doesn't EFS contain Vitamin C?
A: EFS doesn't contain Vitamin C because the latest research shows that Vitamin C can have a negative effect on endurance and performance when consumed during exercise.
Q: What electrolyte upgrades can we find in the new EFS?
A: There are now 300mg of sodium per serving in the new EFS drink (previous formula had 270mg). This represents the highest sodium content in any electrolyte drink on the market. The EFS formula now offers over 1,160mg of electrolytes coming from all 5 electrolytes, per serving.
Furthermore these superior minerals also offer a buffering of stomach acids. DiCalcium and DiMagnesium malate lower stomach acids significantly helping to reduce the unwanted gastric distress that can be associated with other minerals.
Q: Are there any changes to the amino acids?
A: The Amino Acids in the EFS drinks are AjiPure amino acids, the purest, most- bioavailable source of free-form amino acids available. AjiPure amino acids have purity levels of 99%-100%. This results in faster and more complete absorption.
Q: The new EFS drinks now have Malic Acid, why is this important?
A: The new EFS drink contains 700mg of Malic Acid, which was not found in the previous formula. Malic acid stimulates oxygen consumption by increasing mitochondrial uptake, improving mitochondrial respiration and increasing energy production. Malic acid is essential in the formation of ATP, the body's energy source. Malic acid allows the body to make ATP more efficiently, even under low oxygen, or hypoxic conditions.
During anaerobic conditions, malic acid has an ability to remove the accumulation of reducing equivalents. Human studies have shown that after endurance training, athletes’ muscles were characterized by a 50% increase in the malate-aspartate redox shuttle enzymes.
Q: Did the flavors change?
A: Yes, the new formulas went through extensive flavor testing in the most demanding races in the world. Our pro athletes tested the new formulas during the Tour de France, Ironman Hawaii and various other cycling, triathlon and running races. We used this extensive feedback to create all new low sweetness, mild flavors that are very palatable during a wide variety of environmental conditions. The new EFS formulas are all free of any artificial sweeteners, colors and flavors. All formulas use 100% natural flavors and contain NO color. This allows athletes to use EFS not having to worry about staining water bottles. The new flavors, especially the Grape and Orange do well up to 2X the recommended concentration.
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 Branched Chain Amino Acids and Glutamine. Clinical evidence supporting the use of Branched Chain Amino acids 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 ‘NEW’ Protein study and clearly support a mechanism for improved performance.
The First Endurance Research Board sides with the abundance of clinical studies supporting improved endurance performance while supplementing with Amino Acids during exercise. 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
Q: What are the benefits of using EFS during exercise?
A: The benefits of EFS are:
Q: How does it taste?
A: EFS is a light, great-tasting energy drink that’s sweetened and flavored with 100% natural ingredients. Because EFS is low in sweetness, there is no need to dilute the recommended serving allowing you to drink it full strength. Unlike energy drinks that contain complete proteins, EFS is not chalky and thick. The benefit is a potent, easy to digest energy drink which delivers all the nutrients like they were intended (full strength). EFS is available in four refreshing flavors: Lemon-Lime, Fruit Punch, Mild Grape, and Orange Splash.
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. EFS is designed to maximize all these levels. Athletes should consume one serving for every 30 minutes of intense exercise. Adjustments should be made based on body weight, training state, 17
heat, individual sweat rates and preference. Use one serving for every 30 minutes as a starting point and adjust as necessary from there.
Q: What types of athletes should be taking EFS?
A: The following symptoms will all benefit from use of EFS
1) Athletes which experience cramping from strenuous exercise.
2) All athletes who demand rapid fluid absorption in order to stay hydrated.
3) Athletes who want all the benefits of protein without the heavy/chalky consistency of protein drinks. Essentially any athlete exercising for one hour or more will benefit from the use of EFS in their training and racing.
Q: Should I use EFS even when it’s cold, like during XC ski races?
A: Cold weather sports still put a considerable fluid and electrolyte demand on the athlete. EFS works just as well in the cold as is the heat. The high sodium content in EFS may even help reduce the drinks propensity to freeze. (this has not been tested).
Q: Should I use EFS in short races?
A: Short races generally don’t put a heavy demand on your glycogen, carbohydrate stores, given that you are well nourished prior to the start of the race. During a short race athletes can be slowed significantly from cramping and electrolyte imbalance. A serving of EFS can be used 15-30 minutes prior to a short race to assure adequate carbohydrates and electrolytes are available for the intense effort. Short race is defined as one lasting less than one hour.
Q: Should I use EFS in long races?
A: During long races (3 hours+) considerable stress is put on an athlete’s body. 1) Glycogen (energy) stores are depleted 2) cells experience damage from cellular oxidation 3) electrolytes are depleted and 4) amino acids are depleted.
1) EFS replenishes glycogen by using a mix of high glycemic carbohydrates including both simple and complex sugars. This easy to digest mix is rapidly absorbed and delivers fast and long term energy.
2) EFS provides the most potent electrolyte profile available. The combination of all five electrolytes deliver a potent 1040mg per serving, helping to prevent cramping. The 300mgs 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.
3) 2000mg of Amino Acids offers the same BCAA and Glutamine levels as 9g Whey Protein. These amino acids have clinically shown to improve performance, reduced post-exercise muscle damage, improve muscle glycogen resynthesis, reduced central fatigue and improved rate of perceived exertion.
Q: What’s the carbohydrate source in EFS?
A: EFS replenishes glycogen by using a mix of high glycemic carbohydrates including both simple and complex sugars. This easy to digest mix is rapidly absorbed and delivers fast and long term energy.
Q: I am prone to cramping during longer training and racing. Will EFS help me with cramping problems?
A: Nutritionally cramping stem from electrolyte imbalance, electrolyte depletion and/or dehydration,. EFS provides the most potent electrolyte profile available. The combination of all five electrolytes deliver a potent 1040mg per serving, helping to prevent cramping. The 300mgs 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 many servings are in a container of EFS?
A: There are 25 servings per container of EFS
The Highest Electrolyte Content Available
Clinical research shows endurance athletes require much higher levels of electrolytes than most sports drinks provide to prevent cramping and dehydration (4). The new EFS drinks now contains over 1,160mg of all 5 electrolytes per serving, more than any electrolyte drink on the market.
The Latest Amino Acid Technology
The Amino Acids in the EFS drinks are AjiPure amino acids, the purest, most- bioavailable source of free-form amino acids available. AjiPure amino acids have purity levels of 99%-100%. This results in faster and more complete absorption.
Superior Calcium Bioavalibility
The new EFS formulas utilize two unique sources of calcium and magnesium. DiCalcium malate and Dimagnesium malate have superior bioavailability compared to other mineral sources. In a bioavailability study, absorption rates were between 20% and 100% higher using DiCalcium and DiMagnesium malates (1).
Contains Malic Acid
EFS drinkS contains 700mg of Malic Acid to stimulate oxygen consumption by increasing mitochondrial uptake, improving mitochondrial respiration and increasing energy production. Malic acid is essential in the formation of ATP, the body’s energy source to make ATP more efficiently, even under low oxygen, or hypoxic conditions.
Click here to download the EFS research packet in Adobe Acrobat format.
Serving Size: 1 scoop (32g)
Servings per Container: 25
|Amount Per Serving||%DV|
|Calories-96 Calories from fat-0|
|Total Carbohydrate (Complex carbohydrates, Dextrose, Sucrose)||24g|
|EFS Total Electrolyte Blend (Ca, Mg, Cl, Na, K)||1160mg||*|
|Calcium (as DiCalcium Malate)||100mg||10%|
|Magnesium (DiMagnesium Malate)||150mg||38%|
|Chloride (as sodium chloride)||450mg||10%|
|Sodium (as sodium chloride)||300mg||15%|
|Potassium (as di-potassium phosphate)||160mg||6%|
|Malic Acid (from DiCalcium and DiMagnesium Malate)||700mg||*|
|AjiPure Amino Acid Blend (L-Glutamine, Leucine, Iso-Leucine, Valine)||2,000mg||*|
|*Daily Value Not Established
**Percent Daily Values are based on a 2,000 calorie diet.
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