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Scent of relief: aromatherapy shows promise for dementia sundowning

NCT ID NCT07288736

Symptom relief Sponsor: National Cheng-Kung University Hospital Source: ClinicalTrials.gov ↗

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 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 two different essential oil blends can reduce agitation (sundowning) and improve sleep in 35 people with dementia living in long-term care. Participants receive a stimulating morning blend and a relaxing afternoon blend, then a calming all-day blend, each for two weeks. The goal is to see if these simple, non-drug aromas can ease distressing symptoms and improve quality of life.

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 35 people

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

Started

Sep 2025

Expected to finish

Jan 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 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: * Diagnosis of dementia by a specialist according to DSM-5 (any type) OR SPMSQ score \< 8. * Manifesting sundown syndrome with a score ≥ 26 on the CMAI-C. * Able to speak Mandarin or Taiwanese. Exclusion Criteria: * Clinical diagnosis of a psychiatric disorder (e.g., schizophrenia, bipolar disorder). * Acute stage of illness within the past 2 weeks. * Olfactory disorder or loss of smell (anosmia). * Allergy to essential oil fragrances. * Currently receiving aromatherapy. * Respiratory disease (e.g., asthma, COPD).

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Conditions

The condition(s) this trial relates to.

dementia insomnia

As listed by the trial registrant

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

Dementia Sundowning

Contacts and locations

Locations

  • Evergreen Senior Day Care Center

    Kaohsiung, Taiwan, 802, Taiwan

  • Kang Yu Day Care Center, Tainan

    Tainan, Taiwan, 71754, Taiwan

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