Comparison of Pharmacokinetic Responses to Three Ketone Esters
1 other identifier
interventional
18
1 country
1
Brief Summary
The purpose of this study is to examine how the body absorbs, digests, and metabolizes three different investigational ketone dietary supplements (ketone monoester, ketone tri-ester, ketone salt) and to assess gastrointestinal tolerance or other adverse effects. This study is considered investigational because data are being collected on the differences over time between three active study products. Consumption of these study products are not intended to diagnose, treat, cure, or prevent any disease.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for not_applicable
Started Jul 2025
Shorter than P25 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
July 15, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 1, 2025
CompletedFirst Submitted
Initial submission to the registry
December 3, 2025
CompletedFirst Posted
Study publicly available on registry
December 17, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
February 1, 2026
CompletedDecember 17, 2025
December 1, 2025
5 months
December 3, 2025
December 3, 2025
Conditions
Outcome Measures
Primary Outcomes (6)
Serum BHB concentration maximum (Cmax)
blood draws will be performed before (0 min) and 15-, 30-, 45-, 60-, 90-, 120-, 150-, 180-, 240-, 300-, 360-, and 480 min post ingestion of the study product
time to maximum concentration (Tmax)
blood draws will be performed before (0 min) and 15-, 30-, 45-, 60-, 90-, 120-, 150-, 180-, 240-, 300-, 360-, and 480 min post ingestion of the study product
area under the curve (AUC),
blood draws will be performed before (0 min) and 15-, 30-, 45-, 60-, 90-, 120-, 150-, 180-, 240-, 300-, 360-, and 480 min post ingestion of the study product
elimination half-life (T1/2),
blood draws will be performed before (0 min) and 15-, 30-, 45-, 60-, 90-, 120-, 150-, 180-, 240-, 300-, 360-, and 480 min post ingestion of the study product
oral clearance
blood draws will be performed before (0 min) and 15-, 30-, 45-, 60-, 90-, 120-, 150-, 180-, 240-, 300-, 360-, and 480 min post ingestion of the study product
volume of distribution
blood draws will be performed before (0 min) and 15-, 30-, 45-, 60-, 90-, 120-, 150-, 180-, 240-, 300-, 360-, and 480 min post ingestion of the study product
Secondary Outcomes (2)
Visual Analogue Scale for GI tolerance
assessed at 15-, 30-, 45-, 60-, 90-, 120-, 150-, 180-, 240-, 300-, 360-, and 480 min post ingestion of the study product
Safety (vital signs) and Adverse Events
assessed at 15-, 30-, 45-, 60-, 90-, 120-, 150-, 180-, 240-, 300-, 360-, and 480 min post ingestion of the study product
Study Arms (3)
12.5mg Ketone Tri Ester
ACTIVE COMPARATORDietary Supplement containing Tri-betahydroxybutyrin
12.5mg Ketone Mono Ester
ACTIVE COMPARATORDietary Supplement containing a ketone mono Ester
12.5mg Ketone Salt
ACTIVE COMPARATORDietary supplement containing a ketone salt
Interventions
Ketone Tri Ester
Ketone Mono Ester
Dietary Supplement from a ketone salt
Eligibility Criteria
You may qualify if:
- Provide voluntary signed and dated informed consent.
- Be in good health as determined by medical history and routine blood chemistries.
- Age between 30 and 70 yr (inclusive).
- Body Mass Index of 25-34.9 (inclusive).
- Body weight of at least 120 pounds.
- Normotensive (seated, resting systolic blood pressure \<140 mm Hg and diastolic blood pressure \< 90 mm Hg. If the first measurement is slightly elevated above these limits, the subject will be given a brief (5 minute) rest period, and two more measurements will be taken. The average of all three measurements will be used to determine eligibility.
- Normal seated, resting heart rate (\<90 per minute).
- Willing to duplicate and record their previous 24-hour diet, refrain from caffeine, alcohol and exercise for 24 hours prior to each visit, and fast for 10 hours prior to each visit.
- Subject agrees to maintain existing dietary and physical activity patterns throughout the study period.
- Subject is willing and able to comply with the study protocol.
You may not qualify if:
- Individuals using any kind of GLP-1 medications.
- Individuals who are determined to have liver, renal, cardiovascular, neurological, or other metabolic disease.
- History or presence of diabetes, prediabetes or endocrine disorder.
- Use of any dietary supplements or medications which may confound the study or its endpoints (e.g., fish oil, choline donors, gingko biloba, phosphatidylserine, huperzine A, etc.).
- Alcohol consumption (more than 2 standard alcoholic drinks per day or more than 10 drinks per week) or drug abuse or dependence within the past 6 months.
- Current nicotine use \> 100 mg/day.
- History of hyperparathyroidism or an untreated thyroid condition.
- History of malignancy in the previous 5 years, except for non-melanoma skin cancer (basal cell cancer or squamous cell cancer of the skin).
- History of chronic psychiatric conditions (e.g., bipolar, schizophrenia, PTSD, depression, etc.).
- History of brain disorders \[e.g., stroke, MS, Parkinson's, history of TBI or epilepsy, migraine (\>1 migraine per month), etc.\].
- Prior gastrointestinal bypass surgery (Lapband), etc.
- Other known gastrointestinal or metabolic conditions that might impact nutrient absorption or metabolism, e.g., short bowel syndrome, Inflammatory bowel syndrome (IBS), Inflammatory bowel disease (IBD; e.g., Crohn's, ulcerative colitis), diarrheal illnesses, history of colon resection, gastro paresis, Inborn-Errors-of-Metabolism (such as PKU).
- Chronic inflammatory condition (e.g., rheumatoid arthritis, Lupus, HIV/AIDS, etc.).
- Previous medical diagnosis of asthma, gout, or fibromyalgia.
- Currently following a low-carbohydrate, keto type diet, or practicing an intermittent fasting lifestyle (\>14 hours of fasting).
- +6 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
CAHS
Canfield, Ohio, 44406, United States
Study Officials
- PRINCIPAL INVESTIGATOR
Tim Ziegenfuss, PhD
CAHS
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, INVESTIGATOR
- Purpose
- BASIC SCIENCE
- Intervention Model
- CROSSOVER
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
December 3, 2025
First Posted
December 17, 2025
Study Start
July 15, 2025
Primary Completion
December 1, 2025
Study Completion
February 1, 2026
Last Updated
December 17, 2025
Record last verified: 2025-12
Data Sharing
- IPD Sharing
- Will not share