EFS-PRO HIGH CARB (30 SERVINGS)
HIGH CARB FUEL & HYDRATION MIX
The all-new EFS-PRO redefines what’s possible with high-carb fueling. Our completely redesigned formula makes consuming more carbs per hour easier than ever while prioritizing stomach comfort. And with a clinically effective dose of electrolytes, EFS-PRO keeps you fueled, hydrated and energized, even in the most demanding conditions.
✓ 60-120g/bottle of easy-to-digest carbohydrates
✓ Improves performance & increases energy
✓ Boosts hydration & prevents cramping
✓ Zero Artificial Ingredients
Shayna Powless (Professional Cyclist)
TASTES AMAZING!
EFS Pro keeps me well-fueled and tastes amazing
Adam Merry (Professional Trail Runner)
GAME CHANGER
The new EFS PRO formula is a game changer.
Heidi Franz (DNA Pro Cyclist)
SUBSTANTIAL CARB PER HOUR
EFS PRO hits the mark when it comes to easiness on the gut.
THE FURTHER YOU GO, THE MORE NUTRITION MATTERS
PROFESSIONAL STRENGTH ENDURANCE FUEL, UPGRADED.
The breakthrough technology in EFS-PRO allows you to fuel with more carbs and electrolytes without wreaking havoc on your stomach. From faster uptake to more efficient energy production, EFS-PRO’s optimal balance of high-quality carbs is proven to increase athletic performance by supplying a steadier, more efficient source of fuel than conventional carbohydrates.
EFS-PRO is designed to be mixed at higher concentrations and still be absorbed quickly. It’s easier on overworked GI tracts, and it boosts uptake of other critical performance nutrients like electrolytes – a force multiplier you'll notice the first time you use it.
Proper caloric and carbohydrate intake is the most important piece of the puzzle when running 100 milers. EFS-PRO delivers an equal balance of carbs, electrolytes, and calories It goes down smooth. The flavor is good, it’s easy on the stomach and it’s not too sweet.
ENGINEERED FOR YOUR MOST DEMANDING DAYS
MORE FUEL IN THE TANK.
The primary carbohydrate in EFS-PRO is a special, low-glycemic, easy-to-digest Cyclic Cluster Dextrin that gets absorbed incredibly fast without making you feel lethargic, bloated, or even worse.
Cyclic Cluster Dextrin (CCD) delivers a constant and stable release of energy. In addition, CCD preserves glycogen stores and stimulates fat oxidation for energy, so you'll be able to get the most out of every stride or pedal stroke, regardless of how deep you’ve already gone.
100% PERFORMANCE GUARANTEED
If you’re not satisfied, we don’t expect you to pay. Return it within 30 days for a refund or credit. It’s that simple.
100% PERFORMANCE GUARANTEED
If you’re not satisfied, we don’t expect you to pay. Return it within 30 days for a refund or credit. It’s that simple.
A SMARTER WAY TO FUEL
DUAL CARB SOURCES. EVERY POSSIBLE ADVANTAGE.
In addition to the revolutionary CCD, EFS-PRO also contains the ideal ratio of high-glycemic sugars to supercharge energy production. By gaming your biology, EFS-PRO effectively bypasses your body’s inbuilt glucose limit, sneaking more carbs into the ATP cycle by way of a fructose-only backdoor – but keeping glucose saturation high enough to erase the shortcomings of fructose alone.
Using clinical research, EFS-PRO provides more fuel that’s more easily absorbed, raising the carb count to a level that, until recently, sounded like science fiction. Now, it’s just science.
We’re committed to pushing the limits of endurance performance so you can redefine your limits of endurance.
GIVE IT YOUR ALL, All THE TIME
BETTER TODAY. BETTER TOMORROW.
With EFS-PRO, you'll be able to maximize every watt, every day. Our unique blend of carbs is so effective at keeping you fueled during one session, it’s already working to improve your next.
Gone are the days of limping home, junk miles, and lackluster performances. EFS-PRO preserves glycogen by keeping blood glucose high and maintaining access to fat as an exercise fuel source so you'll have fuel for more. The EFS-PRO paradox – you can push your limits today, and be ready to do it again tomorrow.
EVERYTHING YOU NEED, NOTHING YOU DON’T
YOU SPOKE, WE LISTENED.
The longer you go, the more-important your nutrition becomes. That's why we spent a year upgrading the new EFS-PRO, combining the latest research and technology with customer and athlete feedback to redefine what's possible. The Result? A myopically minimalistic formula that's streamlined for pure performance.
PERFORMANCE BENEFITS
PROFESSIONAL STRENGTH HYDRATION MIX provides more electrolytes, calories, and key nutrients for unparalleled performance on the hottest days and most demanding races
UNRIVALED ELECTROLYTE CONTENT prevents cramping & helps you hydrate fast
SUPPORTS MENTAL TOUGHNESS so you can get the most out every stride, every pedal stroke, and every watt, helping you dig deeper when everyone else is falling apart
NEW TASTE PROFILE eliminates the flavor vs function compromise
REFUELS WORKING MUSCLES faster than ever before
THE INDUSTRY’S MOST ADVANCED CARBS to keep you fueled without GI distress
A DIFFERENCE YOU CAN TASTE
NO STEVIA, NO ARTIFICIAL FLAVORS, NO ARTIFICIAL COLORS.
It doesn't matter how good a formula is if it doesn't taste great. EFS-PRO is light, balanced, and refreshing – so it’s easy to stay on top of your fueling and hydration. The carb and electrolytes in EFS-PRO are engineered for hours of intense effort in the most extreme conditions. The flavor profile is engineered to match.
We didn't stop there. We also paid particular attention to flavors and sweeteners. The new EFS-PRO is naturally flavored and sweetened and doesn’t contain any stevia.
CRAMPING & DEHYDRATION ARE HISTORY
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.
CRAMPING & DEHYDRATION ARE HISTORY
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.
LEAVE YOUR COMPETITION IN THE DUST
SCALEABLE FOR ANY EFFORT
Each scoop of EFS-PRO delivers 30g of high-quality carbohydrates. The formula is engineered for scalability without GI distress or overpowering flavor – mix the concentration from 30g to 120g CHO per bottle to increase your carb intake as required.
Q&A
Q: How is EFS different than EFS-PRO?
A: Compared to EFS, EFS-PRO has a more premium ingredients list, delivers more carbs and electrolytes, and includes PharmaGABA® for added mental toughness support. Though EFS is itself a step above the competition, EFS-PRO supports the most demanding efforts in the most extreme conditions by providing even more fuel and cramp prevention while doubling down on First Endurance’s revolutionary approach to supporting your brain like it’s a key muscle for endurance athletics.
Q: Are there other benefits to drinking EFS or EFS-PRO, besides for training and racing?
A: Absolutely. EFS and EFS-PRO can be used to top off electrolytes and help you calm down so you can get a good night’s sleep the night before (or two nights before) an event or race. When you’ve invested an entire season’s prep in peaking for a specific day, the calming effects of EFS or EFS-PRO can help ensure restless nights leading up to that day don’t undercut your form.
Q: Do EFS or EFS-PRO have any artificial flavors or colors?
A: No, but it tastes so good you’d be forgiven for thinking we were cheating.
Q: Do I need to take a full serving of EFS or EFS-PRO to get a benefit?
A: No. A higher concentration increases calories and electrolytes. While our recommended serving concentration is designed to maximize theanine’s effects in a steady dose, ingesting reduced amounts will still produce a proportionally scaled effect in terms of promoting calm focus. In other words, if you are a smaller person and normally consume a somewhat reduced amount, you will still get the same benefits.
Q: Do EFS or EFS-PRO have any stimulants in it?
No. In fact, it does the opposite, calming you down and maintaining a cool, collected approach to whatever you’re doing, whether that’s racing, training, or resting up the night before an event.
Q: Can I use EFS and EFS-PRO with caffeine?
Yes. The calming effects of EFS and EFS-PRO affect you according to the baseline for caffeine consumption that you’ve established through your daily caffeine habit—err, intake. Keep drinking tea or coffee as usual.
Q: What does it do for endurance athletes?
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: How should I mix EFS-PRO?
A: USE DIRECTIONS
SMALL BOTTLE: Mix 3 scoops with 21-22oz water
LARGE BOTTLE: Mix 4 scoops with 24-26oz water
BEFORE: Consume 1 bottle 30 minutes before exercise.
DURING: Alternate 1 serving of EFS-PRO and 1 bottle of water every 30 minutes.
TIP: For additional calories and electrolytes, double the concentration or supplement with Liquid Shot.
Q: Is EFS-PRO vegan friendly?
A: Yes.
Q: Is EFS-PRO gluten-free?
A: Yes.
Q: Is there any way to get too much Theanine from EFS or EFS-PRO?
A: Only if you macro-dose (200mg or more in a single or repeated shot). Even if theanine is administered in a single macro-dose, the effect is just a too-calm calm that fades as the theanine leaves your body—Nothing serious or harmful. Click here to learn more about dosing and uptake. Since our EFS or EFS-PRO serving is limited to a gradually administered 80g every hour, you won’t hit that dose of theanine, even with continued use as directed. That’s because theanine is water-soluble, it metabolizes fast and doesn’t accumulate . Once ingested, it’s half gone after 60-90 minutes, and it’s gone completely in 24 hours.
Q: Does EFS or EFS-PRO help me hydrate better than water?
A: We won’t name them, but there’s a growing list of competitors in the sports hydration game making the claim that their product hydrates better or faster than water alone. This is a so-what claim predicated on evidence that not only doesn’t apply to endurance athletics, but actually hampers performance during long-term endurance events. For their rationale and claims support these companies cite WHO and other medical guidelines for treating serious dehydration in disease and severe exposure conditions, not the sports nutrition guidelines for healthy athletes in endurance competitions. Also important is the need for more fuel, and these drinks fall short in the fuel department. Check out Dr. Bucci’s extended consideration of these claims here.
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 protein
Q: Are EFS and EFS-PRO safe for kids?
Yes. Just make sure they pay it back during their turns at the front.
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.
Q: How should I use EFS/EFS-PRO for races or training that lasts more than three hours?
A: New research suggests athletes can ingest more and more carbs per hour. For detailed information, check out this blog.