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Empty stomach
Food blunts it considerably. Fasted, or a few hours after eating, is where you'll actually notice the difference. This is the single most common reason the first try may underwhelm some.
Best value
Ingredients
Reverse Osmosis Water, Veech Ketone Ester (D-BHB bound to R 1,3 Butanediol). Less than 1%: Stevia, Monkfruit, Thaumatin (from fruit), L-Malic Acid, D-BHB, Salt, Potassium Sorbate, Potassium Gluconate, Inulin, Natural Flavors.
Nutrition Facts
10 “servings”/ 25g per bottle | 2.5g, 12 calories, 0 carb, 0 fat, 0 protein, 4mg sodium per serv.
Primary Functions
Focus
Energy
Recovery
25% ketone ester concentrate· 25g VKE per bottle
Ke2
Life is better when you're better at it.
Clean energyCalm focusNo caffeineNo sugar
“Not Bad” 🍏 flavor, with 3x the water of Ke4 — which is the entire point. Still a concentrate you measure by the capful, still about the same price per gram of Veech Ketone Ester (VKE). You just won't dread drinking it. The recommended choice for value + taste.
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Read this before you buy
This isn't for everyone.
We'd rather lose the sale than take your money for the wrong reason. Nearly everyone who's been disappointed by Veech Ketone Ester bought it expecting something it was never going to do or used it wrong.
Buy it for
- Energy and focus without caffeine The 3pm wall, the early meeting, the long drive.
- Deep work and productivity flow Getting into it, and staying there.
- Fuel before and during a long effort A ride, a run, a round, a session.
- Recovery after hard training Especially back-to-back days.
- Enhanced deep sleep More efficient sleep.
- Traveling Offset jet lag.
- Fasting Extending a fast, easing into a keto diet, or to skip a meal.
- Upgrading your exogenous ketone To the one used in the most clinical trials (for a reason).
- General you enhancement Feeling like your best self.
Don't buy it for
- Weight loss It will not burn fat for you. No ‘ketone’ will. This is a superfood with calories that you will burn instead of fat. Although it will help you skip a meal.
- Achieving instant natural ketosis It raises your blood ketones and temporarily simulates many of the benefits of ketosis, but it isn't the same as being in dietary ketosis and it won't put you there. Although it may help you adapt to keto.
- Kids or pregnancy Not recommended for either.
Why choose Ke2 over the other two
The one we recommend
to most people.
The ester doesn't change between these. Only how much water it arrives in — concentration decides taste, convenience and cost per gram.
Swipe to compare →
30g Veech Ketone Ester per bottle
50% Concentrated
Very Scary Cherry
Strong, bitter and most compact. Not “better”, just less water.
25g Veech Ketone Ester per bottle
25% Concentrated
“Not Bad”
Three times the water of Ke4 at about the same price per gram. We named the flavor Not Bad Apple. TSA friendly.
5g Veech Ketone Ester per bottle
8% Ready to Drink
“Almost Yummy”
Ready to drink, nothing to measure. The smoothiest way to find out what this actually feels like.
“I wish this is how I
introduced people to ketones.”
What it costs to use
The gold standard
doesn't cost more.
At comparable pack sizes, the only other Veech Ketone Ester brand costs about 40% more per gram for the same molecule — plus sucralose and 3g of sugar in a bottle. Pricing verified Aug 2026
80¢Per gram at the 36-bottle auto-ship. The lowest price per gram of Veech Ketone Ester we sell.
$1.00Per gram on a one-time 3-pack. Same price per gram as Ke4.
$2.50–$5For a 2.5–5g dose. About the same as a coffee.
“Nothing costs more than a ketone product that doesn't work.”
Frank LLosa, Founder & CEO KetoneAid
First time
Take it 15 minutes before you need it.
Neat, in a splash of water, in coffee*, in a bottle you carry — the ester doesn't care. Do it this way once before you decide whether it works.
First time — start at 20mL of Ke2
The cap is your 5mL measure. We recommend most people start with 4 capfuls so you know it works. Sensitive females can may start with two. A capful sipped across an hour is how people conclude it doesn't work.
Give it ~15 minutes
Then go do the thing — the ride, the block of work, the drive. What you're looking for is the absence of a dip, not a jolt. It doesn't feel like caffeine, and that's the point.
What you'll notice
Clean energy, on demand.
Better energy is more fun. Glucose fluctuates. Caffeine* spikes and then crashes. Veech Ketone Ester is the performance fuel you can simply drink for clean feeling energy on demand, without the downsides.
No other 'ketone' comes close.
Focus without the crash
Calm and alert rather than wired. No jitter going in, no cliff coming out. Useful for extending long focus blocks without the afternoon falling apart.
Performance fuel + recovery aid
Cleaner burning fuel that doesn't crash you once it's gone. Useful during high exertion efforts, and useful again for recovery.
Appetite goes quiet
Handy for extending a fast or getting through a skipped meal. Not a weight loss tool, as it doesn't burn fat for you.
“Clean energy and
steady mental clarity.”
The molecule, not the marketing
Veech Ketone Ester is the one the research was done on.
75+ published studies have been run on this molecule. When another ketone brand cites a study, they're often referencing this molecule — not what's in their bottle. Check their sources.
15%Recover better — power & endurance TT
38%Boost in muscle energy stores overnight
6%Increase in VO2max, +4% power
6%Increase in VO2max
+4%More power
4%Improved running economy vs sugar
7%Increased cognitive processing speed
87%Improved brain network stability
17%Decreased ghrelin — reduced appetite
90%Reduction in wakefulness after sleep onset
30%Reduction in lactate, cognition preservedThe papers everyone references.
Every stat here links to the study it came from and it used Veech Ketone Ester — the prominent ketone behind “science-backed” claims. No other “ketone” does this.
We index the human performance ones so you can read them yourself.
We've supplied Veech Ketone Ester for human trials at Harvard, Duke, Michigan, Copenhagen and dozens of others since 2018.
These studies typically used about 25g of Veech Ketone Ester and did not necessarily use KetoneAid products. Our dosing recommendations differ significantly. One 10mL "dose" of Ke2 contains 2.5g; a full bottle contains 25g.
Ketone levels don't exactly determine performance. You don't need a ketone meter to know if it's working. Start with 10mL of Ke2 and pay attention to how you feel over the next few hours. We've found 2.5–5g does the job for most people, and going higher (for some) can have diminishing returns — we don't want you paying for grams you don't need.
Universities that used Veech Ketone Ester from KetoneAid for Clinical trials
Veech Ester vs diol vs salt
Different Ketones,
Different Results.
In published third-party work, 10g of ketone ester raises blood ketones roughly 2x as much as the same dose of diol — an alcohol-based BHB precursor your body has to convert first.
But it's not just about blood ketone levels. Different ketones have different results. For example, ‘diol’, what we call Ketohol® in our Hard Ketones line, and is in Ketone IQ, delivers a buzz effect at higher doses. It's great as an alcohol alternative for relaxing, but not for a focus + performance product.
Ketone salts are limited by tolerability of mineral/salt load, and are typically half L-BHB, and therefore only half bioavailable. Too much salt can cause bloating and GI issues.
Where performance matters
Used by Tour de France athletes
Soudal Quick-Step and XDS Astana are partners. Pros choose the ketone that works for optimal performance — not just something that raises ketone levels.
Swipe →
Where it came from
1 molecule came out of 50+ years of research
Dr. Richard Veech began this work in 1969 alongside Nobel laureate Hans Krebs — the Krebs cycle. Decades later, DARPA awarded $10M to his NIH team to find out whether a ketone ester could preserve cognition and alertness in soldiers operating up to seven days without food.
That funding produced the molecule in this bottle. It's the reason this category exists, and it's why nearly every study anyone cites was run on this ester and not on something cheaper that arrived later.
KetoneAid brought it to market first, funded by an Indiegogo campaign that asked for $25,000 and raised $130,000. We're one of only two current suppliers of Veech Ketone Ester.
When Frank, KetoneAid CEO, asked Dr. Veech roughly: “Why not just use 'Diol' and take more to achieve the same ketone levels?” he replied:
“The mice were stumbling.”
He discarded 'diol', keto salts, MCT oil, for therapeutic and performance purposes.
Questions
What people ask before their first bottle.
Will this help me lose weight?
No. No exogenous ketone burns fat for you, and drinking ketones is not the same as being in ketosis. It can help you skip a meal or extend a fast, which some people find useful. As a weight loss product it doesn't work the way people want it to work, and anyone telling you otherwise is selling.
*Can I take it with Caffeine?
All Ketones exacerbate the effects of caffeine — the reason other 'ketone' companies without performance benefits include it in their products. People use Veech Ketone Ester to replace caffeine for a more focused and alert flow state without the jitters. You may need more Veech Ester at first while quitting caffeine.
Warning: Veech Ketone Ester significantly amplifies the effect of caffeine, and not in a good way.
How is this different from Ketone-IQ and other ‘ketone’ drinks?
Different Ketone, Different Results. Ke2 contains Veech Ketone Ester (KME) — D-BHB esterified to R-1,3-butanediol. Several popular products contain R-1,3-butanediol on its own, a precursor your body has to convert first.
In published third-party work, 10g of ketone ester raises blood ketones to roughly 1.7 mM versus about 0.8 mM from the same dose of diol. The 'diol' (meaning 2 alcohols) produces sedative-like euphoric effects. There is no study showing enhanced cognition. So it's not just about raising blood ketone levels. It's how you get there.
Worth knowing regardless of which you buy — the military funding cited across this category funded research on the Veech Ketone Ester, not 'diol'. Can't have inebriated soldiers on duty.
Do I need to be on a keto diet?
No. The ketone ester works whether or not you're keto, and most of our customers aren't. You're adding a fuel, not switching your metabolism over to one.
What does it taste like, really?
Apple, mildly sweet, and genuinely fine. We named the flavor “Not Bad” because that is an honest description rather than a marketing one. Three times the water of Ke4 is most of the reason it goes down easily; there is still a faint ester edge underneath, and cold helps.
Customers who came from Ke4 put it more bluntly. One wrote that Ke4 got him accused of feeding people jet fuel, and that Ke2 is how he wishes he had introduced them to ketones in the first place.
Sweetened with stevia, monkfruit and thaumatin. No sucralose, no sugar, no caffeine.
Is it allowed in competition?
Yes. Every lot is 3rd-party tested for WADA-prohibited substances. Email us your best-by date and we'll send the report for your exact batch.
Will it break my fast?
Depends who you ask. At 12 calories per "serving," most will say NO, but I say it doesn't matter. If you're fasting for focus, appetite control or metabolic reasons, use this to extend/assist fasting.
In other words the comparison should be taking VKE to extend the fast, vs ending the fast with breakfast.
Should I get the Ke4, Ke2 or Ketone Shot?
Ke2 is the one we recommend to most people: the same Veech Ketone Ester as Ke4 at a similar price per gram, with three times the water and a flavor you will not have to talk yourself into. Ke4 if you want the most grams in the fewest bottles and the taste does not bother you. The Ketone Shot if it is your first time or you want the best taste of the three; it costs a little more per gram because you are paying for ready-to-drink.
Ke4 and Ke2 run roughly 15% less per 5g than the Ketone Shot. You're paying for ready-to-drink and for flavor.
Any side effects?
There have been rare reports of mild GI discomfort, most often from a large 10x doses or while on a full stomach. Don't mix it with C8 MCT oil. Starting with 5mL on an empty stomach should be fine. Not for children or during pregnancy. If you have a medical condition or take medication, it's worth a quick word with your doctor.
Customer reviews
What people say
about the middle one.
★★★★★1,314 reviews on Amazon