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Chew time matters: 5 vs 10 minutes of caffeinated gum changes caffeine levels

NCT ID NCT07386899

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

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

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.

Show 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: * 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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