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Caffeine under the tongue: a quick fix for Post-Surgery grogginess in seniors?

NCT ID NCT07536568

Symptom relief Sponsor: Cairo University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study is testing whether giving a caffeine tablet under the tongue at the end of surgery can help elderly patients (65 and older) wake up faster and feel less agitated after general anesthesia. Half of the 50 participants will get caffeine, the other half a placebo. The goal is to see if this simple approach can speed recovery and improve comfort after eye surgery.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
caffeine citrate
What this could lead to
If it works, this could offer a simple, low-cost way to help elderly patients recover more quickly and calmly after surgery.
What could go wrong
This is a small, early-stage trial with only 50 participants, so results may not apply to all elderly patients. Caffeine can also cause side effects like rapid heart rate or anxiety.

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

About 50 people

The number the study aims to enrol. It can still change while the study runs.

Started

Apr 2026

Expected to finish

Aug 2026

An estimate. End dates often move.

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

65 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Age ≥ 65 years. * Both sexes. * American Society of Anesthesiologists (ASA) physical status II. * Scheduled for elective ophthalmology surgery under general anesthesia. Exclusion Criteria: * History of severe cardiac arrhythmias or uncontrolled hypertension. * ASA III patients were excluded to reduce the risk of adverse events in elderly patients with severe systemic diseases. * Known allergy or hypersensitivity to caffeine. * Pre-existing cognitive impairment or dementia (All patients will undergo preoperative cognitive screening using the online Mini-Cog test or Montreal Cognitive Assessment \[MoCA\]). * History of seizures or epilepsy. * History of alcohol or drug abuse. * Chronic use of CNS stimulants or sedatives. * Emergency surgeries. * Prolonged procedures for more than 3 hours.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Caffeine Elderly patients General anesthesia Postoperative agitation Recovery time Sublingual

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Cairo University

    RECRUITING

    Cairo, 12613, Egypt

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