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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 seller
Ingredients
Veech Ketone Monoester (D-BHB bound to R 1,3 Butanediol), Reverse Osmosis Water. Less than 1% of: Stevia*, Inulin*, Potassium Citrate, Potassium Sorbate, Salt, Natural Flavors. *Organic
Nutrition Facts
12 “servings”/ 30g per bottle | 2.5g, 12 calories, 0 carb, 0 fat, 0 protein, 3mg sodium per serv.
Primary Functions
Focus
Energy
Recovery
50% ketone ester Concentrate · 30g VKE per bottle
Ke4
Life is better when you're better at it.
Clean energyCalm focusNo caffeineNo sugar
The most Veech Ketone Ester (VKE) we put in a bottle, and the one most people end up buying. You measure your own dose, so how long a bottle lasts is up to you. It tastes rough — that's what 50% ester tastes like, and it's why we call it Very Scary Cherry.
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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 Ke4 over the other two
It's the concentration most users land on.
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 easiest way to find out what this actually feels like.
Tastes awful
but it works!
What it costs to use
The gold standard
doesn't cost more.
At comparable pack sizes, the only other 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. Less per gram than any other VKE on the market.
$1.00Per gram on a one-time 3-pack. Same price per gram as Ke2.
$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 of 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 10mL of Ke4
A capful is 5mL. We recommend most people start with 2 capfuls so you know it works. Sensitive females may start with with one. 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.
“Much better than HVMN or
various salts I've tried.”
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 brand cites a study, they're often referencing this — 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 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. One 5mL dose of Ke4 contains 2.5g; a full bottle contains 30g.
Ketone levels don't exactly determine performance. You don't need a ketone meter to know if it's working. Start with 5mL of Ke4 and pay attention to how you feel the next few hours. We've found 2.5–5g VKE does the job for most people, and going higher has diminishing returns — you end up paying for grams you don't use.
Independent Clinical Trial · Double-blind · 2026
Mental fatigue slows you down.
Ke4 blocked the slowdown.
After 20 minutes of hard mental work, people on placebo were 9% slower at switching between tasks. On Ke4, their speed held. With caffeine, they got faster.*
Roca, Barker & Waldman, J Strength Cond Res, 2026. Randomized, double-blind, placebo-controlled crossover in 25 healthy adults (20 men, 5 women). Ke4 at 200 mg per kg body weight, taken 30 minutes before a 20-minute mental-fatigue task. Group means; perceived fatigue rose in every condition. The caffeine arm (Ke4 + 200 mg caffeine) started from a slower baseline; the study had no caffeine-only arm. Ke2 and Ketone Shot are the same Veech Ketone Ester at lower concentration; the result follows the grams of VKE, not the bottle.
Task-switching reaction time
Group averages, before and after the fatigue task
Universities that used Veech Ketone Ester from KetoneAid for Clinical trials
Veech Ketone 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?
Rough. “Very Scary Cherry” is not marketing. At 50% ester it is closer to cider vinegar or cough syrup than a soft drink, and there is no version of this molecule at this concentration that tastes good. Measure it, drink it, chase it with cold water — or measure it into water, coffee, or a bottle you carry.
If taste matters more to you than concentration, Ke2 and the Ketone Shot are the same ester with more water in them. Sweetened with organic stevia and inulin. 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?
Ke4 is our best seller: the most grams per bottle, the fewest bottles to store or travel with, and the same price per gram as Ke2. Ke2 is the same ester with three times the water — a real taste improvement, still a concentrate you measure by the capful. 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.
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