Chew time matters: 5 vs 10 minutes of caffeinated gum changes caffeine levels
NCT ID NCT07386899
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at how long you chew caffeinated gum affects how quickly caffeine enters your blood. Thirty healthy men chewed gum with 300 mg of caffeine for either 5 or 10 minutes on separate days. Researchers measured caffeine levels in blood samples taken over three hours to see if chewing longer changes peak caffeine or how long it stays high. The results could help people decide when to chew caffeinated gum for the best effect.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- caffeinated gum (300 mg caffeine)
- What this could lead to
- If successful, this study could help people time their caffeinated gum use for faster or longer-lasting alertness.
- What could go wrong
- This is a small, early-stage study in healthy men only, so results may not apply to women or people with health conditions. It does not test real-world performance or long-term effects.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
-
30 people
The number who actually took part.
- Started
-
Apr 2025
- Finished
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Jun 2025
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 35 years
- Sex
-
Male participants only
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Male, 18-35 years * Good general health * No regular use of medications or substances * Habitual daily caffeine intake ≤300 mg/day Exclusion Criteria: * Habitual daily caffeine intake \>300 mg/day * Failure to participate in any study measurements * Failure to comply with required test and measurement protocols * Experiencing adverse effects from caffeine during the compliance period
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Ege University, Faculty of Sport Sciences
Izmir, Bornova, 35040, Turkey (Türkiye)
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