△G Ketone Performance

Rated 4.7 out of 5
Based on 127 reviews
per pack of 3 bottles

ΔG Ketone Ester per bottle 27grams (25ml)
Servings 1-2 per bottle
Flavor Bitter Blueberry
Target Ketone Level 2-3.5mM BHB
Ideal Users Pro Athletes, Weekend Warriors, Executives, Health Opitimizers.

Our revolutionary Oxford Ketone Ester is unique in its potency, maximizing ketone levels in the blood and providing a powerful fuel source that augments physical performance, sharpens mental acuity, and supports your metabolic health.

  Rapid, deep ketosis on demand.
  Dramatically improved recovery. 
  Improved resilience and cognition.

Salt Free, Vegan, Gluten Free, Made in USA & UK

WADA, BSCG, & FDA GRAS Approved. View all certifications here.

Subscription Benefits

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  Free ΔGold Ketone Espresso Shot v1.0 ($10 Value)
  10% Discount Forever
  Unlimited Consultations with Ketone Expert Included
  VIP Access to Beta Test New Products
  First Access Special Promotions from deltaG Partners
  Free Shipping on Domestic Orders over $100

Flexible Automatic shipments. Cancel Anytime. 

Nutrition Label

△G Ketone Performance Supplement Facts

Serving Size: 1 bottle (59 ml)
Servings per box: 3

Amount per Serving

%Daily Value*




Total Carbohydrate

4 g


Total Sugars

3 g

Includes 0g Added Sugars
Total Fat

0 g


0 g


0 g

deltaG Ketone Ester

25 g

* Percent Daily Values are based on a 2,000 calorie diet.

Other Ingredients: Purified water, blueberry juice concentrate, natural flavor, sucralose, sodium citrate, potassium sorbate, citric acid.

Shipping & Returns

Book Consult Get Results

We highly encourage you to book a Free 15 Min Consultation (Book Consult) with a deltaG Ketone Expert. This will help ensure you get your desired results. You will be getting the same support as our elite level athletes to deliver a custom protocol that fits your specific use case. 


You may return your unopened deltaG Ketones for a full refund. Please contact support to start the return process.


  • Free Shipping on all US orders over $100 for standard shipping (3-6 days)
  • Expedited 2 day and Next Day Shipping calculated at check out.
  • International Shipping available to most countries.

Please read the detailed International Shipping info on countries, duties, taxes, and carrier options before ordering :)

A new metabolic state.

What is Performance Ketosis™?

deltaG®'s groundbreaking technology allows athletes to enter a previously unattainable metabolic state. The current clinical data suggest most recovery and performance enhancing benefits for exogenous ketones occur between 2.0mM to 3.5mM blood BHB levels. deltaG® is the only patented ketone to deliver these levels of Performance Ketosis™

Ketones + Glucose = Optimized Fueling

This new state enables the utilization of ketones without necessitating the depletion of our glycogen stores. Your body will fully optimize fuel sources to dramatically improve recovery, endurance, and resilience.

The studies speak for themselves.

All studies cited here are actual studies using deltaG® ketone monoester. Most ketone companies use our clinical studies to promote inferior products. Make sure you are always reviewing cited data.

$65 Million in R&D

Funded by DARPA and the NIH under the "metabolic dominance" program for the US military to create the most effective fuel for soldiers in the battlefield.

70+ Clinical Studies

Created by University of Oxford and studied by the worlds most renowned academic institutions and research centers for safety and efficacy.

WADA & BSCG Approved

Fully Compliant and registered with World Anti Doping Agency (WADA), BSCG, and FDA GRAS Approved. Made in USA & UK.

The Choice of Champions

chase the podium in sport and in life.


Increased Power

deltaG® is currently being used by the top Ironman athletes.

In five separate studies of 39 high-performance athletes, we show how this unique metabolic state improves physical endurance by altering fuel competition for oxidative respiration. (1)

deltaG® helps to lower lactate and increase power to help you perform better for longer.


15% Improvement in Recovery

deltaG® is used by 7 out of the top 10 ranked WorldTour teams in 2023.

When deltaG® is used in a recovery protocol, cyclists have experienced a 15% increase in power output on subsequent training days. (2)

When combined with protein and carbohydrates, deltaG® optimizes mTOR activation to a degree that could assist in tissue regeneration and protein synthesis – both processes that aid in muscle recovery. (3)

Lastly, deltaG® has shown the ability to significantly aid in muscle glycogen resynthesis. (4)

Cognitive Resilience

Increase Cognitive Performance

deltaG® is has been shown to decrease cognitive fatigue at times of physical exhaustion (5)

By providing your brain with high amounts its preferred fuel source, deltaG® helps you perform better and retain cognitive acuity for when you need it most. (6)

Improve reaction time, spacial awareness, and decision making.

deltaG® Athletes

How to use deltaG® Performance

We also offer bespoke ketone protocols based off your specific use case. Book now to speak to the same ketone coach that world class athletes work with directly.

Book Free Consult Now

Take 1 serving 30 minutes before any workout, training session, or event. Take another serving every subsequent 2 hours for extended work.

Individuals weighing less than 150lbs may want to start with 1/2 bottle servings.

Take 1 serving immediately after workout, training session, or event. It is best to take 20-30 minutes before other recovery nutrition.

Take 1 serving as needed for any activity that requires enhanced cognitive energy, such as deep work, speaking engagements, or recovery from lack of sleep.

Frequently Asked Questions

How does deltaG Performance taste?

We like to say "Ketone esters taste like the work." haha.

deltaG Performance has a slight blueberry taste which most customers find palatable.

Ketones have a very bitter taste and we worked hard to improve the taste using while keeping it clean.

If you prefer no flavoring or wish to mix into your own concoction please purchase Tactical which is the raw ketone ester.

How do you feel on deltaG ketones?

Fueling with ketones takes you to a place where everything flows — a gentle, clean boost of energy without the jitters or racing heart. 

How does deltaG improve athletic performance?

The presence of ketones (specifically BHB) during aerobic exercise will be prioritized over fat because it is oxidized easier by cells. Per every unit of oxygen, the body is able to produce more energy from ketones than fat.

The combination of ketones and glucose will achieve a metabolic state that was previous unattainable in human history. Before the existence of exogenous ketones, someone would need to be starved of carbohydrates (thus glucose) for weeks or fasted for days to produce the amount of ketones endogenously to be used as a primary energy source. With the introduction of this ketone source, someone can achieve ketosis (blood ketones over 0.5-0.7 mmol/L) without the dietary restrictions.

Combining glucose and ketones for performance: When your body has ketone bodies and glucose available for use:

o The brain (user of around 30% of the body’s energy) will prioritize the usage of ketones over glucose (satisfying around 80% of its energy needs when readily available). The brain can really only metabolize two energy substrates – ketones and glucose – because of something called the blood brain barrier: a thin lining that protects the brain mostly from free radicals in the bloodstream. If the brain is receiving the appropriate amount of energy during an exercise session (which is a bit more difficult when using strictly glucose), the user will feel more focused and attentive throughout and afterwards.

o The glucose will be used less for immediate use and more for restoring glycogen levels

o The combination will require less of an insulin spike versus a strictly glucose-fueled uptake

§ That is why you will see more of a stabilization in blood glucose when using the deltaG ketone ester

How does deltaG ketones improve recovery?

There seem to be many different ways in which the ingestion of exogenous ketone esters can aid in recovery after strenuous exercise.

o Firstly, muscle damage is mitigated when there is ample amount of BHB available in the blood stream. There are a couple main reasons for that:

§ Certain inflammatory markers, like IL-6 and creatine kinase, are minimized

§ Once glycogen levels are emptied, the body will begin its process of gluconeogenesis, the creation of glucose from various areas of the body – protein and muscle breakdown are one of the ways in which this is done. The presence of ketone bodies will help inhibit much of this process.

o Secondly, the ingestion of carbohydrates along with ketones increases glycogen resynthesis, the restoring of glycogen stores. Without ketone supplementation, the high number of fatty acids present in the blood after strenuous exercise could blunt efficient glycogen resynthesis from taking place – ketone bodies mitigate that increase in fatty acids. Also, when ketones and glucose are present, glucose uptake within the body appears to be higher.

o Next, the ingestion of protein and carbohydrates (the combination that seems to have the most data behind its recovery benefits) along with ketones will activate MTOR to a degree that will assist in tissue regeneration and protein synthesis – both processes that aid in muscle recovery. When taken alongside protein and carbohydrates, ketones do not promote glycogen resynthesis to a higher degree, unlike when it is taken with carbohydrates alone.

o Lastly, fatigue has been an interesting area of study using ketone bodies. Per the initial research, the blunting of fatty acids by BHB after strenuous exercise will inhibit a usual increase in the free fatty acid tryptophan in the brain – one of the main reasons why people feel mentally fatigued after a workout.

How does deltaG ketones improve cognitive function?

The simple fact that the brain would prefer ketone bodies over glucose should tell you a lot about the brain’s energy needs and how they are met with ketone bodies. 30% of your body’s available energy substrate (more specifically glucose) will be used by the brain - so the brain is a massive user of energy. When given the option between glucose and ketones, the brain can, and will, satisfy up to 80% of its energy needs with ketones alone.

Ketone metabolism by the brain has been shown to increase memory, spatial awareness, and cognitive resilience in mice and also in humans.

This is especially true at points of physical exhaustion. When the body is exerting massive amounts of energy, the brain sacrifices a lot of its energy needs to the body, where energy needs are more substantial. This results in cognition being temporarily impaired – the inability to focus while physically exhausted is something most people have experienced. When supplementing with a ketone ester, the brain will still use the ketone bodies for energy, especially during an anaerobic exercise when glucose will be the primary energy source for the body. This is important for athletes because fat cannot be metabolized by the brain – so during an anaerobic exercise the brain would prefer to have ketone bodies present.

How is deltaG Ketone Ester superior to ketone salts?

The high salt content in ketone salt drinks limits the volume that can be consumed, so salt drinks produce lower blood ketone levels than the ketone ester, deltaG. △G and △H both contain deltaG, which the body metabolizes completely to βHB (beta-hydroxybutyrate). As it contains no salt, deltaG can be consumed in volumes sufficient to produce blood ketone levels that are normally found with strict ketogenic diets and extended fasting. △G and △H are made using patented deltaG technology.

Can deltaG Ketones replace a ketogenic diet?

deltaG can both augment or replace a ketogenic diet, although they will not be effective in someone with poor eating habits.

In the keto-adapted athlete, △G raises ketone levels to be used as an endurance fuel and to help maintain healthy levels of glycogen and preserve muscle.

deltaG complements a ketogenic diet for healthy weight management and/or improving body composition. △H drinks can alleviate feelings of hunger and blunt the impact of a carb-rich “cheat meal” by expediting the return to ketosis.

How do I measure my ketone levels?

There are three ways to measure ketone levels:


1. Blood Ketone Test

Pros: The most accurate measurement available.Cons: Requires a handheld device (i.e., FreeStyle or Keto Mojo) and test strips, which can be expensive. You have to take a finger-prick blood sample.


2. Urine Ketone Test Strips

Pros: Cheap, available in many pharmacies, and non-invasive.Cons: Less accurate than blood. Over time, the body adapts to excrete fewer ketones in the urine.


3. Breath Acetone Meter

Pros: Once you buy the device, it’s free each time you test.Cons: Requires a handheld device (i.e. Biosense). Breath tests are less accurate than blood.


When taking ketone supplements or following a keto diet, you should check your ketone levels on a regular basis. Testing can help you determine if your method is effective.

Are they safe to drink? Is there anything that cannot be taken with deltaG Ketones?

deltaG Ketones can be consumed with any other food and with supplements, such as creatine, whey protein, and branched-chain amino acids. Since 2008, deltaG has been the subject of a wide range of scientific safety studies that led to a Generally Recognized as Safe (GRAS) designation and a U.S. FDA notification. deltaG is not on the World Anti-Doping Agency (WADA) banned list for athletes.

Developed at the University of Oxford

The Oxford ketone ester is the result of the pioneering work of Professor Kieran Clarke at the University of Oxford and the late Dr. Richard Veech at the National Institutions of Health that started in 2003.

Initially, the project was funded through the Metabolic Dominance program run by the United States Defense Advanced Research Projects Agency (DARPA). DARPA's aim was to discover the most energetically efficient food group to allow soldiers to maintain their physical and mental capacities over five days on the battlefield.

average rating 4.7 out of 5
Based on 127 reviews
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86% of reviewers would recommend this product to a friend
Rated 5 out of 5
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Muscle Recovery
Rated 4 out of 5
Rated 4 out of 5
Mental Cognition & Focus
Rated 4 out of 5
Customer photos and videos
Review posted
Reviewed by hans k.
Verified Buyer
Rated 5 out of 5

2 thumbs up

Took a full bottle before a key indoor 2hr bike ride. It really did make a difference!

There’s got to be a way though to make the product more affordable. Thanks a lot!!

I recommend this product
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Reviewed by C. P.
Verified Reviewer
Rated 5 out of 5

Great Way to Tap Energy Reserves

Have used DeltaG in three Half-Ironman races in 2021. DeltaG Ketones allowed me to consume somewhat less nutrition during the bike and run sections of my Ironman races, which eliminated the stomach problems that are pretty routine in long-distance endurance races. That alone was a huge benefit. I also found that I didn’t have any noticeable low points during these long races, as I normally would; I felt consistently strong and focused throughout the races. I timed my consumption of DeltaG so that I would take a bottle every two hours or so. It has worked really well, and I plan to continue using DeltaG Ketones.

I recommend this product
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Reviewed by Jay
Verified Buyer
Rated 5 out of 5

Measurable Spike in Blood Ketones and Trememdous Mental Clarity

I am a runner and have been on an LCHF diet for more than four years. Although I don't follow a strict ketogenic diet, I do spend some or all of most days in a state of nutritional ketosis. I often work out in a fasted state and also race shorter distances in a fasted state. I have struggled at the end of long, intense efforts where I am tapping into stored muscle glycogen. I was attracted to the deltaG product because of the promise of being able to cycle my carbohydrate intake higher just before a prolonged intense effort and maintain the benefits of fat adaptation earlier in the race.What I have experienced is high levels of measured blood ketones shortly after consuming the product. I see levels consistent with those I have only achieved during multi-day fasts. I also experience the same acute mental clarity characteristic of an extended fast. The first effect is measurable and reproducible. The second is so consistent with my experience fasting that I am confident in the claim. I do feel that there are performance benefits when combined, as I have with UCAN Superstarch. I think that something is different, and I just placed my third order of the Ketone Esters. However, more experiment is needed. Fortunately, I have two marathons and an ultra this fall.Lastly, regarding the taste, it's no worse than the cough syrup I remember from childhood. Moreover, I have had no GI issues.The product is expensive but worth trying for someone looking for an edge.

I recommend this product
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