VKE FOR COMBAT SPORTS

HARD ROUNDS.
CLEAR HEAD.

FOCUS. ENERGY. RECOVERY.

Veech Ketone Ester provides D-BHB — another fuel your brain and muscles can use through training, camp and competition.

A food, not a stimulant.

WHAT VKE DOES FOR COMBAT

Your body gets tired.
Execution still counts.

FOCUS TIRED IS WHEN MISTAKES GET EXPENSIVE.

Timing. Reactions. Position. Pacing. The plan. Technique when you’re gassed.

PROOF: After exhaustive intermittent running, athletes on carbohydrate alone made +1.8 more multitasking errors. With VKE + carbohydrate: 0.0. Reaction time, sprint times and time to exhaustion did not differ. Team-sport trial, not a fight. Evans & Egan 2018 ↓

ENERGY FUEL.
NOT ANOTHER STIMULANT.

VKE provides D-BHB for brain + muscle — the same D-BHB your own liver makes, provided rapidly as an additional fuel. Fits a carb-fueled plan or a low-carb plan. The protocol changes, not the molecule.

WHAT IT IS: A food. No caffeine. Nothing here promises harder punches or faster takedowns — nobody has measured that. Where it fits ↓

RECOVERY RECOVERY IS PART OF THE WORK.

Hard sparring. Drilling. Conditioning. Strength. Two-a-days. Sleep. Then do it again.

PROOF: In athletes, VKE after a strenuous training day improved sleep efficiency and counteracted the exercise-induced rise in wakefulness. In a 3-week overload block, week-3 training load ran 15% higher. Robberechts 2023 · Poffé 2019 · Robberechts 2026 ↓

WHY ADD VKE?

Add another fuel.

CARBS

High-output fuel.

Keep them if they are part of your plan.

WATER + ELECTROLYTES

Hydration.

Keep them.

CAFFEINE

A stimulant.

VKE isn’t one, and doesn’t need it.

PROTEIN

Muscle maintenance and repair.

VKE isn’t protein.

VKE

Another fuel for brain + muscle.

Add it to the plan. Use alongside the rest.

DIFFERENT TOOLS.
DIFFERENT JOBS.

Which matters most when you’re training on less food. THE CUT ↓

MEASURED IN HUMANS

The numbers that
matter for camp.

30%

FEWER CALORIES · TRAINING CAPACITY HELD

Four weeks on 30% fewer calories. On placebo, exercise capacity and resting metabolism dropped. With VKE, both held. Muscle mass was a separate job — higher protein preserved it, VKE did not.

HIROUX 2023 · PMID 36714318 · 32 FEMALE RECREATIONAL ATHLETES

0 vs +1.8

MULTITASKING ERRORS

After exhaustive intermittent exercise: 0.0 added errors with VKE + carbohydrate vs +1.8 with carbohydrate alone. Reaction time, sprints and time to exhaustion did not differ.

EVANS & EGAN 2018 · PMID 29944604 · 11 TEAM-SPORT ATHLETES

95%

EXTRA WAKEFULNESS · COUNTERACTED

A strenuous training day raised wakefulness after sleep onset by 95%. VKE post-training and pre-sleep counteracted it. Sleep efficiency +3%. Not a sleep drug — a fuel taken at a time that showed up on the polysomnograph.

ROBBERECHTS 2023 · PMID 37259248 · 10 TRAINED CYCLISTS

+15%

SUSTAINABLE TRAINING LOAD

Week 3 of a 3-week overload block, VKE after training and before sleep. Power in the last 30 minutes of a 2-hour session was also 15% higher. Training-load evidence — not a fight result.

POFFÉ 2019 · PMID 31039280 · ENDURANCE OVERLOAD, FIT MEN

ADJACENT EVIDENCE. NONE OF THESE WERE BOXING, MMA, WRESTLING OR GRAPPLING TRIALS. THE NUMBERS ARE WHAT WAS MEASURED, IN THE PROTOCOL NAMED. RESEARCH SERVINGS ARE NOT CONSUMER INSTRUCTIONS.

THE CUT

Eat 30% less.
Keep training.

Cutting calories usually costs you in the gym. One human trial put athletes on 30% fewer calories for four weeks and measured what they lost — and what VKE kept.

CAPACITY HELD.ON 30% FEWER CALORIES · 4 WEEKS · 32 FEMALE RECREATIONAL ATHLETES · VKE VS PROTEIN VS PLACEBO

PROTEIN HAS A JOB.
VKE HAS A DIFFERENT ONE.

  • Placebo lost exercise capacity. VKE didn’t — capacity held on the same calorie deficit.
  • Placebo’s resting metabolism slowed. Lean-mass-adjusted resting energy expenditure held with VKE.
  • Stress measures improved with VKE through the deficit.
  • Muscle mass was preserved by higher protein, not by VKE. Keep the protein.

HIROUX ET AL. 2023, FRONT PHYSIOL · PMID 36714318 · RESEARCH SERVINGS ARE NOT CONSUMER INSTRUCTIONS

Anatomical muscle illustration in KetoneAid green
CALORIES, NOT WATER

A reduced-calorie camp is not the same thing as an aggressive dehydration cut. VKE is fuel — not a dehydration tool, not a fat burner, and not a substitute for protein or food. How it fits a make-weight plan is in the protocol.

VKE CAN SIGNAL MUSCLE.
IT STILL ISN’T PROTEIN.

In 36 healthy young men, VKE alone, 10 g of whey, and VKE + whey each raised myofibrillar protein synthesis above baseline — with no significant difference between them. Supporting evidence, not the point of this section.

In the calorie-restriction trial, protein — not VKE — preserved muscle mass. Keep the protein.

HANNAIAN ET AL. 2024, AM J CLIN NUTR · PMID 38215886 · OVERNIGHT-FASTED, RESTING · 10 G WHEY COMPARATOR

UNDER FATIGUE

Tired is when mistakes
get expensive.

Hard rounds tax more than your lungs and legs. The combat-relevant human signal here is accuracy and execution under fatigue.

  • Read.
  • React.
  • Position.
  • Remember the plan.
  • Choose.
  • Make the right move.
EVANS & EGAN 2018 · PMID 29944604

Team-sport athletes ran intermittent shuttles to exhaustion. Carbohydrate alone: +1.8 multitasking errors. VKE + carbohydrate: 0.0. Reaction time, sustained attention, sprint times and time to exhaustion: no difference.

11 MALE TEAM-SPORT ATHLETES · CROSSOVER · THE ESTER WAS KE4

QUINONES & LEMON 2022 · PMID 36297060

Mentally fatigued first, then a 45-minute simulated match. Choice-reaction accuracy fell 1.3% with VKE vs 3.4% on placebo. Reaction speed and Stroop did not differ.

9 RECREATIONAL SOCCER PLAYERS · CROSSOVER · ACCURACY HELD, SPEED DID NOT CHANGE

ROCA 2026 · PMID 42429835

Under mental fatigue, VKE alone primarily prevented the decline that placebo showed on a task-switching test. The largest effect came from VKE with caffeine — a lab condition, not a recommendation.

LABORATORY MENTAL-FATIGUE PROTOCOL · CAFFEINE IS NOT IN THE KETONEAID PROTOCOL

THE IMPORTANT PART ISN’T FASTER REACTION TIME. IT’S HOLDING ACCURACY WHEN FATIGUE HITS. In one study: 0.0 vs +1.8 added multitasking errors. In another: choice-reaction accuracy fell 1.3% vs 3.4%. Reaction speed itself did not improve. Preserved under fatigue. Not boosted from rest.

RECOVERY IS KEY

Recovery is part
of the work.

Hard sparring today. Skill work tomorrow. Strength after that.Camp rewards what you can repeat.

95%

EXERCISE-INDUCED EXTRA WAKEFULNESS · COUNTERACTED

A strenuous training day nearly doubled wakefulness after sleep onset. VKE after training and before sleep counteracted the increase.

ROBBERECHTS 2023 · PMID 37259248 · TRAINED CYCLISTS, POLYSOMNOGRAPHY

+3%

SLEEP EFFICIENCY AFTER A STRENUOUS TRAINING DAY

Same trial. VKE also counteracted the usual post-exercise drop in REM sleep. VKE is a food, not a sleep aid.

ROBBERECHTS 2023 · PMID 37259248

+15%

SUSTAINABLE WEEK-3 TRAINING LOAD

Three-week overload block, VKE post-training and pre-sleep. Training load held 15% higher in week 3 and late-session power was 15% higher.

POFFÉ 2019 · PMID 31039280 · ENDURANCE OVERLOAD, FIT MEN

Some of the strongest VKE results came from using it after training and before sleep through a training block — not from one serving before competition.

Recovery here means sleep after strenuous training, the ability to absorb repeated work, and coming back for the next session. It does not mean soreness relief or faster repair of muscle damage — a trial tested that and found no effect. It is in the receipts.

8-WEEK CAMP

Don’t wait until
fight week.

The longest VKE training study to date ran eight weeks — the length of a camp. The lesson is not the number. It is the pattern: repeated use across the whole block.

302 vs 291 W

30-MIN TIME-TRIAL POWER AT WEEK 8 · ~4% HIGHER WITH VKE

8 WEEKS

SUPERVISED ENDURANCE TRAINING · 28 TRAINED MEN

2× / DAY

VKE AFTER TRAINING + 30 MIN BEFORE SLEEP · RESEARCH PROTOCOL

↑

RELATIVE VO₂PEAK, CITRATE SYNTHASE ACTIVITY AND OXPHOS COMPLEX II ROSE MORE WITH VKE

ROBBERECHTS ET AL. 2026, J PHYSIOL · PMID 41757674 · ENDURANCE MODEL. THIS IS NOT “4% BETTER IN A FIGHT.” IT IS EVIDENCE THAT REPEATED USE ACROSS A TRAINING BLOCK IS WHERE VKE HAS SHOWN THE MOST.

KETONEAID PROTOCOL GUIDANCE

For serious camp use, build VKE into the full 8-week training block rather than introducing it in fight week.

Test the protocol in training. Learn how it fits your fueling before it matters.

Exact amounts and timing live at /pages/vke-protocols. Research servings are not consumer instructions.

TRAIN WITH IT.DON’T JUST SHOW UP WITH IT.

8 WEEKS ADDS UP BULK ORDERS Save up to 20%

FIGHTERS · COACHES · GYMS · PROGRAMS · TRAINING CAMPS

REAL FIGHTER. REAL USE.
“When I take it, it does amazing things for me.”
Matt Brown UFC VETERAN

PUBLIC CONVERSATION, JRE MMA SHOW #14, FEBRUARY 2018. IN THE SAME KETONE-ESTER DISCUSSION THE PRODUCT IS IDENTIFIED AS KETONEAID KE4. REAL-WORLD USE, NOT A CLINICAL RESULT. NOT A CURRENT SPONSORSHIP AND NOT AN ENDORSEMENT BY ANY ORGANIZATION OR HOST.

HEAR THE CONVERSATION
THE COMBAT PROTOCOL

Training. Camp.
Competition.

Different windows. Same molecule. Amounts and timing live on the VKE protocol page.

01 · HARD TRAINING / SPARRING

Test it in training first.

Before competition, learn how VKE sits with your fueling. A carb-fueled session and a low-carb session are different contexts — find out which one you are in.

FIRST TIME = TRAINING. NEVER COMPETITION DAY.

02 · REDUCED-CALORIE CAMP

It can fit a reduced-energy plan.

VKE can ride alongside a calorie-restricted camp. Protein still has its own job. VKE is not a protein replacement and not a weight-loss product.

CALORIE CUTS ONLY. NOT A DEHYDRATION TOOL.

03 · POST-SESSION / PRE-SLEEP

Where the evidence is strongest.

After hard sessions. Before bed on selected hard days. This is the pattern behind the sleep, training-load and 8-week results above.

AMOUNTS: /PAGES/VKE-PROTOCOLS. NO CAFFEINE IN THE PROTOCOL.

04 · COMPETITION / TOURNAMENT

Use what you tested in camp.

Carb-fueled: keep the carbs. Low-carb or fat-adapted: VKE can fit a lower-carbohydrate strategy. Post-weigh-in, rehydration, electrolytes and your established nutrition come first. VKE is additional fuel — not rehydration.

ONSET 15–20 MIN · PEAK ~60 MIN · FUEL ≠ HYDRATION

MAKING WEIGHT · CALORIES, CARBS, WATER, SALT

A short low-carb or fasted phase can lower scale weight partly through glycogen-associated water.

Lower carbohydrate intake can reduce stored glycogen, and glycogen is stored with water. Some of the resulting scale change can therefore be water, not a VKE effect. It also means sodium and electrolytes may matter more, not less.

Where VKE fits: as D-BHB energy through a low-calorie or fasted day, when the usual fuel isn’t on the menu. Test it in camp first.

After weigh-in: rehydration, electrolytes and your established nutrition come first. VKE is additional fuel, not rehydration.

This gets complicated fast, and we don’t publish dehydration-cut instructions. See the protocols or text 703-829-9411 with your specific goal.

YOUR FUELING STRATEGY CHANGES THE PROTOCOL.IT DOESN’T CHANGE THE MOLECULE.

BUILT FOR SOLDIERS FIRST

The U.S. military
paid to create it.

DARPA — the Pentagon’s research arm — funded the Metabolic Dominance program to develop nutritional strategies for sustaining physical and mental performance during prolonged military operations. Work led by Dr. Richard Veech and Todd King at NIH produced the molecule now called the Veech Ketone Ester.

NOT A DIOL.NOT A SALT.THIS MOLECULE.

THE MOLECULE

Different ketones,
different results.

NO OTHER KETONE COMES CLOSE.

“Ketones” is a category. The results on this page belong to the molecule actually tested.

THE MOLECULE CITED ON THIS PAGE Veech Ketone Ester
  • D-BHB ketone monoester — (R)-3-hydroxybutyl (R)-3-hydroxybutyrate
  • DARPA / NIH heritage
  • 75+ published VKE studies
  • Human performance, cognition and recovery evidence
DIFFERENT MOLECULE R-1,3-butanediol
  • A diol alcohol — a ketone precursor, not a ketone
  • Different kinetics
  • Does not inherit VKE results
DIFFERENT FORMULATION Ketone salts
  • BHB bound to sodium, potassium, calcium or magnesium
  • Often racemic
  • Do not inherit VKE results
DIFFERENT MOLECULE / FORMULATION D-BHB free acid & other esters
  • Different structure, different delivery
  • Do not inherit VKE results

THE RESULTS BELONG TO THE MOLECULE TESTED.

If a brand sells a different molecule while citing VKE research, that research is still evidence for VKE — not for what they sell. Check the molecule.

DIFFERENT KETONES, DIFFERENT RESULTS.

Liquid courage
≠ ↑ performance.

R-1,3-butanediol — what’s in “ketone” products like Ketone-IQ — is metabolized through alcohol and aldehyde dehydrogenase pathways. That is not Veech Ketone Ester. It is a different molecule with a different use case.

Human butanediol research has reported euphoria, dizziness and gastrointestinal symptoms. Three published performance studies used Ketone-IQ itself: two found no performance benefit. The one positive paper was funded by HVMN and co-authored by HVMN’s Research Lead — the study our review takes apart. Earlier butanediol exercise trials also found no performance benefit. So no, a butanediol product does not get to borrow VKE performance claims just because both can raise BHB. Read “What’s Real vs. What’s Spin?” or compare the different ketones.

  • KETONE-IQ PERFORMANCE STUDIES · 2 NULL · 1 POSITIVE
  • POSITIVE PAPER · HVMN-FUNDED + HVMN CO-AUTHOR · READ THE REVIEW
  • SHAW 2019 · RACEMIC BD · NO TIME-TRIAL BENEFIT · DIZZINESS / NAUSEA / EUPHORIA REPORTED
  • SCOTT 2019 · BD + CARBS · NO 5-KM BENEFIT
  • CARPENTER 2026 · KETONE-IQ · NO TIME-TRIAL BENEFIT

A buzz-drink molecule doesn’t get to borrow VKE’s performance evidence. Call it what it is.

DIFFERENT KETONES,DIFFERENT RESULTS.

Alcohol works against training and recovery. If the buzz ritual is something you don’t want to give up, that is exactly what Hard Ketones is built for. Real Buzz. No Booze. Don’t lose your head. Same R-1,3-butanediol molecule — purposed for its actual best use as an inebriating alternative to alcohol, at a better per-gram value, not dressed up as a performance ketone.

SHAW ET AL. 2019, INT J SPORT NUTR EXERC METAB · PMID 30632425 · SCOTT ET AL. 2019, J SCI MED SPORT · DOI 10.1016/J.JSAMS.2018.11.027 · CARPENTER ET AL. 2026, NUTRIENTS · DOI 10.3390/NU18142388 · LOWDER ET AL. 2023, FRONT PHYSIOL · PMID 37457035 · DIFFERENT-MOLECULE COMPARISONS.

WHAT’S ACTUALLY BEEN MEASURED

Human results that
map to combat.

REDUCED-ENERGY CAMP

Four weeks on 30% fewer calories: training capacity and resting metabolism dropped on placebo and held with VKE. Muscle mass was preserved by protein, not VKE. Hiroux 2023.

COGNITION UNDER FATIGUE

Multitasking errors, choice-reaction accuracy and task-switching held under fatigue where placebo declined. With VKE alone, speed did not change. Evans & Egan 2018 · Quinones 2022 · Roca 2026.

RECOVERY / SLEEP

Sleep efficiency +3%; exercise-induced extra wakefulness and REM loss counteracted. Robberechts 2023.

REPEATED TRAINING

+15% sustainable load in a 3-week overload block; ~4% higher time-trial power after 8 weeks of post-training + pre-sleep use. Poffé 2019 · Robberechts 2026.

PROPER RESULTS DEPEND ON PROPER USE.

Same molecule. Different protocol. Different result. A single serving before a time trial lowered 30-minute power in one study; repeated post-training use raised it in another. The protocol is the variable.

Where we draw the line. There is not yet a definitive published VKE boxing, MMA, wrestling or grappling performance trial. Everything above is direct for the protocol it measured and adjacent for the cage, the ring and the mat. We say which, every time.

KetoneAid bottles packed in a combat gym bag with wraps and gear
IT GOES WITH THE GEAR.

Get it in
your corner.

The molecule matters. The protocol matters. Test it in camp before you trust it on competition day.

TRAIN WITH IT FIRST. FIGHT WITH WHAT YOU KNOW.

IN THE GYM BAG

Choose your
VKE.

Concentration decides taste. All three are the same Veech Ketone Ester at different dilutions.

KetoneAid Ke4

Ke4

MOST CONCENTRATED · COMPACT 50% VKE · 30g PER BOTTLE

Most concentrated. The most VKE in the fewest bottles, and the most potent taste.

STOCK UP AND SAVE
KetoneAid Ke2

Ke2

MULTI-SERVING · TRAINING CAMP 25% VKE · 25g PER BOTTLE

Same Veech Ketone Ester, more diluted and easier to drink.

STOCK UP AND SAVE
KetoneAid Ketone Shot

Ketone Shot

GYM BAG · TOURNAMENT FORMAT · EASY TO TRY 8% VKE · 5g READY TO DRINK

Lowest-friction way to try VKE or carry a single serving.

SHOP KETONE SHOTS

ALL KETONEAID PRODUCTS ARE 3RD-PARTY BATCH TESTED FOR WADA-PROHIBITED SUBSTANCES. ATHLETES: CHECK YOUR EVENT / FEDERATION’S CURRENT RULES.

COACHES · GYMS · PROGRAMS BULK ORDERS Save up to 20%

Considering VKE for your fighters or program? Contact us.

  • Protocol built around your training week, camp and competition calendar
  • Product for athletes to trial in camp before competition
  • Research support: what is measured and what isn’t
  • All KetoneAid products 3rd-party batch tested for WADA-prohibited substances

Join the community of over 5,000 members. Get advice or share your experience — what worked, what didn’t. ketoneaid.com/fb

Combat athlete training, frame 1 of 5
THE RECEIPTS

Every number on this page, with its protocol.

Each entry is labeled DIRECT OUTCOME (what the study measured, in its own protocol), ADJACENT SPORT APPLICATION (how it maps to combat), or DIFFERENT-MOLECULE COMPARISON. Research servings are not consumer instructions.

Four weeks on 30% fewer calories: capacity and resting metabolism held with VKE; muscle was preserved by protein.

HIROUX ET AL. 2023 · FRONT PHYSIOL · PMID 36714318PROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

ADJACENT SPORT APPLICATION

PROTOCOL

  • 32 female recreational athletes, 4 weeks, 30% energy restriction
  • Three groups: placebo, increased protein (~2.0–2.2 g/kg/day), or VKE 3×20 g/day
  • DXA body composition, indirect calorimetry, VO₂max test, appetite hormones, well-being questionnaires

WHAT HAPPENED

  • Increased protein prevented muscle loss and maintained exercise capacity
  • VKE did not change body composition — it did not preserve muscle mass
  • VKE preserved exercise capacity vs placebo and prevented the placebo decline in lean-mass-adjusted resting energy expenditure
  • Overall stress parameters improved with VKE

WHY IT MATTERS HERE

  • The only trial that puts VKE in a deliberate reduced-energy state while training
  • It splits the jobs cleanly: protein protects muscle, VKE rides alongside for capacity and energy expenditure

CONTEXT

  • Female recreational athletes, not weight-class competitors
  • Calorie restriction only — no dehydration or rapid weight-making component
  • Molecule: (R)-3-hydroxybutyl (R)-3-hydroxybutyrate

NEVER READ AS: VKE preserves muscle, burns fat, makes weight or replaces protein or food.

VKE alone, 10 g whey, and both together each raised myofibrillar protein synthesis — no difference between them.

HANNAIAN ET AL. 2024 · AM J CLIN NUTR · PMID 38215886PROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

DIRECT OUTCOME

PROTOCOL

  • 36 healthy young men, overnight-fasted, resting
  • Ketone monoester 0.36 g/kg vs 10 g whey vs both; tracer-measured myofibrillar fractional synthesis rate over 5 h

WHAT HAPPENED

  • All three treatments raised myofibrillar protein synthesis above basal
  • No significant between-treatment difference

WHY IT MATTERS HERE

  • Shows VKE is not inert to muscle — a supporting point under The Cut

CONTEXT

  • Comparator was only 10 g whey, at rest, not after training
  • Acute signaling is not the same as preserving muscle across a 4-week deficit — Hiroux answered that, and protein won

NEVER READ AS: VKE is anabolic like whey, builds muscle as well as protein, or replaces protein.

After exhaustive intermittent running, 0.0 added multitasking errors with VKE + carbohydrate vs +1.8 with carbohydrate alone.

EVANS & EGAN 2018 · MED SCI SPORTS EXERC · PMID 29944604PROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

ADJACENT SPORT APPLICATION

PROTOCOL

  • 11 male team-sport athletes, crossover
  • Loughborough intermittent shuttle test to exhaustion
  • 750 mg/kg ketone monoester + 6.4% carbohydrate vs carbohydrate alone; the ester was Ke4

WHAT HAPPENED

  • Multitasking errors: +1.8 on carbohydrate alone vs 0.0 with the ester (p=0.017, d=0.70)
  • Blood BHB 1.5–2.6 mM
  • Reaction time, sustained attention, sprint times, heart rate, RPE and run time to exhaustion did not differ

WHY IT MATTERS HERE

  • Repeated high-intensity intermittent work to exhaustion is the closest laboratory shape to rounds
  • The measured difference was in errors under fatigue, not speed

CONTEXT

  • Team-sport athletes, not fighters; running, not striking or grappling
  • Physical performance measures were unchanged — reported plainly

NEVER READ AS: faster reactions, better fight IQ, or prevention of mistakes.

Mentally fatigued, then a 45-min simulated match: choice-reaction accuracy fell 1.3% with VKE vs 3.4% on placebo.

QUINONES & LEMON 2022 · NUTRIENTS · PMID 36297060PROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

ADJACENT SPORT APPLICATION

PROTOCOL

  • 9 recreational soccer players, double-blind crossover
  • 40-min mental-fatigue task, then 25 g ketone monoester or non-caloric placebo, then 45-min intermittent treadmill match
  • Stroop and choice-reaction task performed during exercise

WHAT HAPPENED

  • Choice-reaction correct answers fell 1.3% with KME vs 3.4% with placebo (p=0.02)
  • Reaction time increased similarly in both conditions; Stroop did not differ
  • Blood BHB ~1.6 mM; blood glucose and lactate lower with KME

WHY IT MATTERS HERE

  • Fatigue was induced before the work began — closer to a late-round state than a fresh start
  • Accuracy was what held

CONTEXT

  • n=9, laboratory treadmill, placebo not energy-matched
  • Molecule: (R)-3-hydroxybutyl (R)-3-hydroxybutyrate

NEVER READ AS: faster reaction time. Speed did not change; accuracy held.

Under mental fatigue, VKE alone prevented the task-switching decline seen on placebo; VKE + caffeine showed the largest effect.

ROCA ET AL. 2026 · J STRENGTH COND RES · PMID 42429835PROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

ADJACENT SPORT APPLICATION

PROTOCOL

  • Laboratory mental-fatigue protocol; ketone monoester, ketone monoester + caffeine, placebo
  • Task-switching outcome

WHAT HAPPENED

  • KME + caffeine: task-switching ~97 ms quicker than placebo (largest effect)
  • KME alone primarily prevented the decline placebo showed

WHY IT MATTERS HERE

  • Third independent signal that the VKE effect is holding performance under fatigue, not boosting from rest

CONTEXT

  • Caffeine is a stimulant and is not part of the KetoneAid protocol; the combination condition is reported, not recommended

NEVER READ AS: a recommendation to add caffeine.

After a strenuous training day, VKE improved sleep efficiency 3% and counteracted the 95% rise in wakefulness and the drop in REM.

ROBBERECHTS ET AL. 2023 · MED SCI SPORTS EXERC · PMID 37259248PROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

DIRECT OUTCOME

PROTOCOL

  • 10 well-trained cyclists, polysomnography
  • Strenuous morning and late-evening exercise designed to disturb sleep; ketone ester or placebo after each session and pre-sleep; a rest-day control

WHAT HAPPENED

  • Exercise cut REM sleep 26% and raised wakefulness after sleep onset 95% vs rest
  • KE improved sleep efficiency 3% (p=0.040) and counteracted both the REM decrease and the wakefulness increase

WHY IT MATTERS HERE

  • Camp is a sequence of strenuous days; sleep is the recovery lever you can actually move

CONTEXT

  • Endurance athletes, not a fight camp
  • The same group reports no benefit to already-good sleep on rest days — the effect is specific to exercise-disturbed sleep

NEVER READ AS: a sleep drug or sleep aid.

3-week overload block: sustainable training load +15% in week 3, late-session power +15%, overreaching symptoms blunted.

POFFÉ ET AL. 2019 · J PHYSIOL · PMID 31039280PROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

ADJACENT SPORT APPLICATION

PROTOCOL

  • Fit men, 3 weeks of endurance training overload
  • Ketone ester after each session and before sleep vs isocaloric control

WHAT HAPPENED

  • Sustainable training load in week 3 was 15% higher with KE
  • Power output in the final 30 min of a 2-h session was 15% higher
  • The stress marker GDF15 rose ~2-fold more in control

WHY IT MATTERS HERE

  • Camp is overload by design. Absorbing more of it without tipping into non-functional overreaching is the whole job

CONTEXT

  • Endurance overload model, not a fight camp
  • Post-exercise + pre-sleep timing — not pre-competition

NEVER READ AS: +15% fight performance.

8 weeks of training with VKE after sessions and before sleep: 30-min time-trial power 302 vs 291 W (~4% higher), plus larger mitochondrial adaptations.

ROBBERECHTS ET AL. 2026 · J PHYSIOL · PMID 41757674PROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

ADJACENT SPORT APPLICATION

PROTOCOL

  • 28 trained men, 8 weeks of supervised endurance training
  • 25 g ketone ester immediately post-exercise and 30 min before sleep daily (n=14) vs isocaloric control (n=14)

WHAT HAPPENED

  • Time-trial power at week 8: 302 ± 28 W (KE) vs 291 ± 27 W (control); mean difference 11 W, 95% CI 4–18, p<0.001
  • Relative VO₂peak, citrate synthase activity and OXPHOS complex II rose more in the KE group
  • Peak cardiac output did not differ

WHY IT MATTERS HERE

  • Eight weeks is a camp. The result came from daily repeated use across the whole block, not from a serving on test day

CONTEXT

  • Endurance model; power on a bike is not a fight outcome
  • Research dose is not a consumer instruction — amounts at /pages/vke-protocols

NEVER READ AS: “you will improve fight performance 4%.”

One serving before a 30-min time trial lowered power; a following ~1-min all-out sprint did not change.

POFFÉ ET AL. 2021 · MED SCI SPORTS EXERC · PMID 33196605 · MIXED DESIGNPROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

DIRECT OUTCOME · NULL / NEGATIVE

PROTOCOL

  • 12 well-trained male cyclists (full text; abstract reports 14), double-blind crossover
  • Placebo, ketone ester, bicarbonate, or ketone ester + bicarbonate before and during a 30-min time trial followed by an all-out sprint at 175% of lactate threshold

WHAT HAPPENED

  • Ketone ester lowered blood pH and bicarbonate and reduced 30-min time-trial power
  • Sprint time to exhaustion was ~64 s in both placebo and ketone ester — no difference
  • Bicarbonate raised sprint time to exhaustion ~8% regardless of ketone ester

WHY IT MATTERS HERE

  • This is the short, maximal shape of combat. One acute serving did not help it and hurt the longer effort
  • It is why this page does not sell one-dose explosiveness

CONTEXT

  • Mixed design (bicarbonate arms). Only the ketone-ester-alone arm is read here
  • Same molecule, different protocol, different result from the 8-week study above

NEVER READ AS: VKE improves punching power, sprint power or knockout power. It did not.

After muscle-damaging eccentric exercise, ketone monoester did not speed recovery of muscle performance or reduce soreness.

MARTIN-ARROWSMITH ET AL. 2020 · FRONT NUTR · PMID 33364251PROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

DIRECT OUTCOME · NULL

PROTOCOL

  • 20 moderately active young adults (10 men, 10 women), independent groups
  • Drop-jump eccentric protocol; 360 mg/kg ketone monoester or energy-matched carbohydrate twice daily over 48 h

WHAT HAPPENED

  • Muscle performance recovery and soreness did not differ between groups
  • Blood BHB was higher with the ester, as expected

WHY IT MATTERS HERE

  • It defines the word “recovery” on this page: sleep and training-load, not soreness or damage repair

CONTEXT

  • Acute muscle-damage model, 48 h window

NEVER READ AS: VKE eliminates soreness or repairs muscle damage faster.

Racemic 1,3-butanediol before cycling: no time-trial benefit; GI symptoms in 5 of 9, low-level dizziness, nausea and euphoria in 2.

SHAW ET AL. 2019 · INT J SPORT NUTR EXERC METAB · PMID 30632425 · DIFFERENT MOLECULEPROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

DIFFERENT-MOLECULE COMPARISON

PROTOCOL

  • 9 trained male cyclists, crossover
  • R,S-1,3-butanediol 0.5 g/kg in split servings; 85-min steady state then time trial

WHAT HAPPENED

  • No time-trial benefit
  • Moderate-to-severe gastrointestinal symptoms in five participants
  • Low-level dizziness, nausea and euphoria in two

WHY IT MATTERS HERE

  • Butanediol is a diol alcohol precursor, not VKE. Its results do not transfer in either direction

CONTEXT

  • Racemic R,S mixture, not R-1,3-butanediol alone
  • Reaction time was not measured; no claim about it is made

NEVER READ AS: butanediol always inebriates, sedates or slows reaction time.

1,3-butanediol + carbohydrate before a 5-km run: BHB up, lactate down, no time-trial benefit.

SCOTT ET AL. 2019 · J SCI MED SPORT 22(6):702-706 · DOI 10.1016/J.JSAMS.2018.11.027 · DIFFERENT MOLECULEPROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

DIFFERENT-MOLECULE COMPARISON

PROTOCOL

  • 11 male runners, randomized crossover
  • Energy-matched ~650 ml drink: carbohydrate + 1,3-butanediol vs carbohydrate alone; 60 min submaximal running then 5-km time trial

WHAT HAPPENED

  • Blood BHB rose and blood lactate fell with butanediol
  • 5-km time-trial performance did not improve

WHY IT MATTERS HERE

  • A higher BHB reading is not a performance result. Same lesson the butanediol category keeps teaching

CONTEXT

  • Chirality of the butanediol not specified in the paper
  • Not VKE

NEVER READ AS: evidence about VKE.

1,3-butanediol + carbohydrate in keto-adapted athletes: BHB tripled, time trial unchanged.

CARPENTER ET AL. 2026 · NUTRIENTS 18(14):2388 · DOI 10.3390/NU18142388 · DIFFERENT MOLECULEPROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

DIFFERENT-MOLECULE COMPARISON

PROTOCOL

  • 9 recreationally active men with at least a year on a ketogenic diet, counterbalanced crossover
  • 60 g carbohydrate vs 60 g carbohydrate + 0.5 g/kg 1,3-butanediol; 60 min set-intensity cycling then 16.1-km time trial

WHAT HAPPENED

  • Post-exercise BHB 1.69 vs 0.55 mmol/L
  • Time trial 1606 vs 1620 s — no significant difference; no change in lactate, substrate oxidation, RPE or heart rate

WHY IT MATTERS HERE

  • Even in athletes primed to burn ketones, butanediol did not move performance

CONTEXT

  • Small sample; endurance model
  • Not VKE

NEVER READ AS: evidence about VKE.

R-1,3-butanediol, 34.5 g over 60 min in 26 adults: no measured increase in sleepiness; mostly none-to-mild GI symptoms.

LOWDER ET AL. 2023 · FRONT PHYSIOL · PMID 37457035 · DIFFERENT MOLECULEPROTOCOL · WHAT HAPPENED · WHY IT MATTERS HERE · CONTEXT

DIFFERENT-MOLECULE COMPARISON

PROTOCOL

  • 26 healthy adults, open-label, 12-h fast
  • Three servings of 11.5 g (R)-1,3-butanediol at 0, 30 and 60 min; BHB, GI symptoms and Stanford Sleepiness Scale over 5 h

WHAT HAPPENED

  • Blood BHB peaked ~2.1 mM about an hour after the last serving
  • No impact on measured sleepiness; generally well tolerated

WHY IT MATTERS HERE

  • It keeps this page from overclaiming: butanediol is not automatically sedating. It is simply a different molecule

CONTEXT

  • Open-label, no placebo; industry-affiliated authors
  • Divided servings; single larger boluses in earlier work were where euphoria and dizziness appeared

NEVER READ AS: evidence about VKE. It is evidence about a different molecule.

QUESTIONS

Ketones for fighters, answered plainly.

Do ketones help MMA fighters?

Depends which ketone. The Veech Ketone Ester (VKE) has human evidence for holding cognitive accuracy under fatigue, for training-load and sleep during hard training blocks, and for exercise capacity during a reduced-energy period. None of it was an MMA trial, and other “ketones” are different molecules with different evidence. VKE is a food, not a dietary supplement.

Do ketones help boxers?

The relevant VKE evidence for a boxer is the same as for any combat athlete: fewer errors under exhaustive intermittent exercise, sleep after strenuous training, and higher sustainable training load across an overload block. No boxing trial exists yet. Nothing here claims harder punches or faster hands.

Are ketones useful for wrestling or BJJ?

Wrestling and grappling share the parts VKE has actually been measured on: repeated hard work, technique executed while tired, camps with reduced calories, and recovery between sessions. The evidence is adjacent — team-sport, endurance and calorie-restriction trials — not a wrestling or BJJ study.

Has VKE been studied directly in fighters?

Not yet. There is no definitive published VKE boxing, MMA, wrestling or grappling performance trial. Every result on this page is direct for the protocol it measured and adjacent for combat. We label which is which in the receipts.

How do I keep my energy up during fight camp?

Food first. Then consider adding VKE as another fuel. In an 8-week training study, VKE after sessions and before sleep produced higher time-trial power and larger mitochondrial adaptations than training alone. In a 3-week overload block it allowed 15% more sustainable training load. Repeated use across the block is the pattern behind both results.

How do I stay sharp late in a fight or match?

Fitness and preparation do most of it. What VKE has shown in human studies is holding cognitive accuracy under fatigue: zero added multitasking errors after exhaustive intermittent running versus +1.8 on carbohydrate alone, and a smaller drop in choice-reaction accuracy during a simulated match after induced mental fatigue. Speed did not change in those studies. Preserved under fatigue, not boosted from rest.

Can VKE help while I’m cutting calories?

Yes — this is one of the clearest combat-relevant results. In a 4-week trial on 30% fewer calories, exercise capacity and lean-mass-adjusted resting metabolism dropped on placebo and held with VKE, and stress measures improved. Muscle mass was preserved by higher protein, not by VKE. Read it as keep training while intake is down, with protein still doing its own job. Calorie restriction only — not a dehydration cut.

Does VKE help me lose weight?

No, but. VKE is not a fat burner and it does not create the calorie deficit — in the 4-week deficit trial it did not change body composition. It can fit a make-weight plan. VKE supplies D-BHB energy through a low-calorie or fasted day, and if you go low-carb or fasted to make weight, some of the scale loss can come from glycogen-associated water — which can make salt and electrolytes more important, not less. That water shift is not a VKE effect. It gets complicated fast: see the protocols or text us about your specific goal.

Does VKE preserve muscle during a cut?

Not on its own. In the 4-week deficit trial, higher protein preserved muscle mass and VKE did not. But VKE is not inert to muscle: it stimulated myofibrillar protein synthesis in humans, and post-exercise VKE raised mTORC1 signaling in a recovery study. So it can support a muscle-preservation strategy — alongside protein and training, never instead of them. Protein supplies the material. Training supplies the stimulus. VKE supplies fuel and a signal.

Does VKE replace protein?

No. VKE can stimulate muscle protein synthesis acutely, but in a 4-week deficit it was protein, not VKE, that protected muscle. VKE is another fuel. Protein is protein.

What should I take before sparring?

Whatever you have already tested in training. If you are adding VKE, the first time is a training session, never a competition. Amounts and timing are on the VKE protocol page. Onset is about 15–20 minutes; peak is around 60 minutes.

Should I use VKE during an 8-week fight camp?

That is where we recommend it: built into the full training block, not introduced in fight week. The longest VKE training study ran 8 weeks with post-training and pre-sleep use and produced higher time-trial power and larger mitochondrial adaptations. Test the protocol in training; exact amounts live on the VKE protocol page.

Why use VKE after training or before bed?

Recovery is key. Because that is where the strongest repeated-use results came from. After a strenuous training day, VKE post-exercise and pre-sleep improved sleep efficiency 3% and counteracted the exercise-induced rise in wakefulness and drop in REM sleep. The 3-week overload and 8-week training studies used the same window. No added caffeine to complicate an evening.

Can I use VKE after weigh-in?

Yes, if you tested it in camp. Post-weigh-in, rehydration, salt and electrolytes and your established nutrition come first; VKE layers in as additional fuel. If you went low-carb or fasted to make weight, remember some of that scale loss was glycogen-bound water, so electrolyte needs may be higher than usual. VKE is not rehydration and not a dehydration tool. See the protocols or text us with your specific goal.

Does VKE replace carbs?

No. If carbohydrate is part of your plan, keep it. VKE is an additional fuel that sits alongside carbohydrate, not a replacement for it.

Do I have to take VKE with carbs?

No. The cognition-under-fatigue trial paired VKE with carbohydrate; the sleep, overload and 8-week training studies did not require it. Your fueling strategy changes the protocol. It doesn’t change the molecule.

Can low-carb or fat-adapted fighters use VKE?

Yes. VKE is an ideal fit for a lower-carbohydrate strategy: it provides D-BHB energy directly rather than relying on your own ketone production. Test it in training first, like anything else.

Does VKE replace electrolytes?

No. Fuel is not hydration. Low-carb or fasted phases shift water and sodium, so salt and electrolytes may matter more, not less. VKE is not a cramp product and is not a rehydration tool.

Can I take VKE with caffeine?

You can, but treat the caffeine as a stimulant with its own dose and timing. In a 2026 mental-fatigue study, the ketone monoester plus caffeine produced the largest effect — task-switching about 97 ms quicker than placebo — while VKE alone prevented the decline seen on placebo. That is a reported lab condition, not a recommendation; caffeine is not part of the KetoneAid protocol. Warning: for some people caffeine hits harder alongside VKE — more jitters, a bigger crash, and disrupted sleep if it is taken late. Test the pairing in training, not fight week, and keep it out of the evening. VKE contains no caffeine and does not need it.

Does VKE increase punching power?

Nobody has measured it, so nobody gets to say yes or no. What has been measured is adjacent: one pre-exercise serving did not change a ~1-minute all-out sprint and lowered power over a 30-minute time trial, while repeated post-training use across 8 weeks raised time-trial power. So the case is not a one-dose power spike. It is holding execution under fatigue, another fuel when calories are low, recovery, and training with it across camp — the things that decide whether the power you already have is still there in the late rounds.

Is VKE allowed in competition?

Yes. VKE is not listed on the 2026 WADA Prohibited List, and all KetoneAid products are independently batch tested for substances prohibited under anti-doping rules. Athletes remain responsible for checking their event or federation’s current rules.

Are all KetoneAid products WADA tested?

Yes. All KetoneAid products are 3rd-party batch tested for WADA-prohibited substances. Batch testing is testing, not approval or certification by any anti-doping body, and athletes should confirm their own event or federation rules.

Which KetoneAid product should a fighter start with?

Ke4 if you want the most VKE in the fewest bottles and are tough enough to handle the most potent taste. Ke2 for multi-serving camp use, more diluted and easier to drink. Ketone Shot for the gym bag, tournament days or the lowest-friction first try. All three are the same Veech Ketone Ester at different dilutions.

Do other types of ketones have the same evidence?

No. These results belong to VKE.

Every result cited on this page comes from the Veech Ketone Ester / D-BHB ketone monoester actually studied.

R-1,3-butanediol, ketone salts, D-BHB free acid and other ketone esters are different molecules or formulations and generally lack positive performance outcomes.

They do not inherit VKE’s results.

If a brand sells a different molecule while citing VKE research, that research is evidence for VKE — not for what they’re selling.

Check the molecule. Different ketones, different results. COMPARE THE KETONES →

What is R-1,3-butanediol — and will it get me buzzed?

A diol alcohol the liver converts toward BHB — a ketone precursor, not a ketone — through alcohol and aldehyde dehydrogenase pathways. And yes, like alcohol, it can get you buzzed: human research has reported euphoria and dizziness, and Hard Ketones sells the same R-1,3-butanediol on purpose as a Real Buzz. No Booze. inebriating alternative to alcohol. As with a drink, a small amount may not register and people respond differently, but the effect is real and it is the point of that molecule.

What doesn’t change is that it is a different molecule from the Veech Ketone Ester, with different kinetics and its own evidence, and VKE results do not transfer to it. Read “What’s Real vs. What’s Spin?”

Are ketones one of the best MMA, boxing or wrestling supplements?

Veech Ketone Ester is a food, not a dietary supplement. Judged on human evidence, VKE has measured results for cognition under fatigue, sleep after strenuous training, sustainable training load and exercise capacity during calorie restriction — all adjacent to combat, none from a fight trial. Other products sold as “ketones” are different molecules and do not carry that evidence.