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Rosemary oil may sharpen memory, small trial hints

NCT ID NCT07563114

Symptom relief Sponsor: Federal University of Paraíba Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study tests whether inhaling rosemary essential oil can improve memory, attention, and other thinking skills in healthy adults. 63 participants will either sniff rosemary oil or a placebo for 14 days and take brain tests before and after. The goal is to see if this natural remedy can give cognition a gentle lift.

What this could mean

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

Active substance
rosemary essential oil (camphor and cineol chemotypes)
What this could lead to
If it works, this could point toward a simple, natural way to boost cognitive performance in healthy adults.
What could go wrong
This is a small, early-stage trial with only 63 participants. The effects may be small or not different from placebo. Results may not apply to people with health conditions.

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

63 people

The number who actually took part.

Started

Mar 2025

Expected to finish

Dec 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

18 to 59 years

Sex

Anyone

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.

1. Inclusion Criteria: * 1a Healthy adults * 1b should be able to inhale the essential oil 2. Exclusion Criteria: * 2a Neurodegenerative diseases * 2b Traumatic brain injury * 2c Brain tumors * 2d Multiple sclerosis * 2e Epileptic seizures * 2f Anxiety Disorder * 2g Depressive Disorders, * 2h Uncontrolled arterial hypertension, * 2i nutritional deficiency or thyroid disease.

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Conditions

The condition(s) this trial relates to.

cognitive disorder

As listed by the trial registrant

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

Aromatherapy Cognition

Contacts and locations

Locations

  • Helô

    João Pessoa, Paraíba, 58062-106, Brazil

More trials for these conditions

Other studies related to the condition(s) this trial covers.