Fat-Burning drink: caffeine and green tea combo tested in new study
NCT ID NCT07434752
First seen Jun 27, 2026 · Last updated Sep 10, 2026 · Updated 2 times
Summary
This study looks at whether a drink containing caffeine and green tea extracts can increase how much fat your body burns at rest, during exercise, and after a workout. Researchers will measure fat burning in 40 healthy adults aged 18 to 45 who exercise moderately. The goal is to see if this combination can help improve fat oxidation for better exercise results.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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36 people
The number who actually took part.
- Started
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Mar 2026
- Expected to finish
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Sep 2026
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 45 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Passing the Exercise and Sport Science Australia adult pre-exercise screening system (APSS) stage 1 \& 2 (see appendix 4). * Between the ages of 18 and 45, * Not sedentary, and not completing more than 150 minutes of low and/or moderate and/or or vigorous intensity endurance exercise a week, * Ability to commit to in principle fulfilment of all 3 trial visits, * No history of coagulopathy e.g., DVT, stroke, * No known heart disease, * No known pancreatic insufficiency, * No known inflammatory bowel disease, or prior bowel resection or bypass surgery (excluding gastric banding and sleeve), * BMI of 22.0 to 34.9 kg/m2, * No known allergies to caffeine or green tea extract, * No known type I or II diabetes, * No uncontrolled concurrent illness, * No known current pregnancy or breastfeeding women * No current regular consumption of supplements (\>2 times a week) or foods and drinks containing caffeine and/or green tea extracts (\>2 times per day, weekly). * Agree not to consume caffeine for 12-hours prior to the clinic visit. Exclusion Criteria: * Triggering any of the exclusion screening criteria as outlined below, and in compliment with the Exercise and Sport Science Australia adult pre-exercise screening system (APSS). * Under the age of 18 or over the age of 45, * Sedentary, or completing over 150 minutes of low and/or moderate and/or or vigorous intensity endurance exercise a week, * Inability to commit to in principle fulfilment of all 3 trial visits, * History of coagulopathy e.g., DVT, stroke, * Known heart disease, * Known pancreatic insufficiency, * Known inflammatory bowel disease, or prior bowel resection or bypass surgery (excluding gastric banding and sleeve), * BMI \< 22.0 or \> 34.9 kg/m2, * Known allergies to caffeine or green tea extract, * Known type I or II diabetes, * Uncontrolled concurrent illness, * Taking GLP-1 agonists, caffeine, or any other medication known to affect metabolism. * Known current pregnancy or breastfeeding women. * Currently regularly consuming supplements, foods or drinks containing a caffeine and green tea extract blend, or not willing to abstain for the study
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Griffith University, Gold Coast Campus
Southport, Queensland, 4222, Australia
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Other studies related to the condition(s) this trial covers.
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