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EFS-PRO Hydration Drink Mix - 20 Servings

Regular Price: $49.95

Professional Strength Endurance & Hydration Mix
EFS-PRO 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.

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Regular Price: $49.95

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When redesigning EFS-PRO, we discarded tradition to establish a new tier of endurance technology that meets the unique requirements of the most driven athletes on the hottest days in the most demanding races.

  • Promotes mental toughness
  • Engineered for unparalleled performance
  • Advanced carbs to keep you fueled without GI distress
  • Industry-leading electrolyte content to prevent cramping

Suntheanine® L-theanine is a mind-over-matter compound for maximizing your brain’s control over exercise performance. The brain plays a key role in endurance. Keeping your brain in the game strengthens your resolve at those decisive moments that can make the difference between success and failure. This means you can dig deeper into your reserves and react better when everyone is suffering, because you’ll be less influenced by that little voice inside your head that’s screaming at you to stop.


EFS-PRO now contains Pharma GABA®, a patented form of the amino acid GABA, to help you get the most out of every stride or pedal stroke when suffering ramps up and things get serious.

The GABA supplied by PharmaGABA® is a major neurotransmitter that your brain uses to balance out stress and—in the context of endurance sports—it allows you to push past your perceived maximal exertion and closer to your true maximum exertion for longer periods of time.

EFS-PRO’s primary carbohydrate is a special high-glycemic branched-chain cyclic cluster dextrin (CCD) that stimulates fat oxidation for energy, preserving glycogen stores so you’ll have reserves to capitalize when others are hitting the wall.

Cyclic cluster dextrin is one of the lowest-osmolality carbohydrate sources available and is 100% soluble in water, so it can be mixed at stronger concentrations and still be absorbed quickly and easily, making EFS-PRO the only caloric intake you need to see you through anything from a crit to a century or even a full 140.6-mile triathlon.

Athletes should consume one serving (3 scoops) for every 30 minutes of intense exercise. Adjustments should be made based on body weight, training state, individual sweat rates and preference. Use one serving for every 30 minutes as a starting point and adjust as necessary from there.

Sample Flavor
: Lemon Lime
Serving Size: 3 scoops (40g) makes 12 fluid ounces
 Amount Per Serving %DV*
 Calories 120
  Calories From Fat 0
 Total Fat 0g
 Cholesterol 0g  0%
 Total Carbohydrate 30g
 (long high branched amylopectin dextrin, short chain maltodextrin, dextrose, sucrose)
   Sugars 10g
 EFS Total Electrolyte Blend (Ca, Mg, Cl, Na,K) 1400mg  **
 Calcium 100mg
(as DiCalcium Malate)
 Magnesium 50mg
(DiMagnesium Malate)
 Chloride 530mg
(as sodium chloride)
 Sodium 500mg
(as sodium chloride and citrate)
 Potassium 220mg 
(as di-potassium phosphate)
 L-Glutamine 2g
 BCAA 2:1:1 (as Leucine, Isoleucine, and Valine) 250mg
 L-Alanyl-L-Glutamine 200mg
 L-Theanine (as Suntheanine) 50mg  **
 Gamma Amino Butyric Acid (as PharmaGABA) 17mg  **
* Percent Daily Values are based on a 2,000 calorie diet.
** Daily Value Not Established
Ingredients: Cluster Dextrin, Maltodextrin, Sugar, Dextrose, Guar Gum, Natural Flavor, Gum Arabic, Stevia Extract.

Q: What is EFS-PRO?

A: EFS-PRO 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-PRO contain Vitamin C?

A: EFS-PRO 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. Click here for more info.

Q: What electrolyte can we find in the new EFS-PRO?
A: There is 500mg of sodium per serving in the new EFS-PRO drink (EFS has 300mg). This represents the highest sodium content in any electrolyte drink on the market. The EFS-PRO formula now offers over 1,500mg 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-PRO 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: What is the osmolality of the EFS-PRO drink mix?
A: EFS-PRO has an osmolality around 250 when mixed at full concentration (32 grams in 12 ounces of water).

Q: When should I use EFS-PRO instead of EFS?
A: The link below explains when you should use EFS-PRO instead of EFS and visa versa:

Q: What is L-Alanyl L-Glutamine? 
A: The EFS-PRO is also fortified with L-Alanyl L-Glutamine which is a highly soluble water stable source of glutamine with some very unique features. This amino acid has been clinically proven to significantly improve the absorption of water and electrolytes in the intestinal tract.

Q: What is malic acid used for in the EFS-PRO drinks? Why is this important? 

A: The new EFS-PRO drink contains 700mg of malic acid. 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: How is the flavor? 
A: The new EFS-PRO formula went through extensive flavor testing in the most demanding races in the world. We used this extensive feedback to create a flavor profile that mimics flavored water. With practically no sweetness this formula is ideal for those long, hot workouts where sweet drinks simply do not cut it. All formula uses 100% natural flavors and contains NO color. This allows athletes to use EFS not having to worry about staining water bottles.

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