A crossover study to evaluate the effectiveness of bergamot essential oil on sleep quality and stress

A crossover study to evaluate the effectiveness of bergamot essential oil on sleep quality and stress - A crossover study to evaluate the effectiveness of bergamot essential oil on sleep quality and stress

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000046709

Enrollment

Registered

2022-01-25

Start date

2022-01-26

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

healthy adult

Interventions

Intervention group. Subjects in the study group will keep a towel at the bedside that is sprayed with bergamot essential oil. They will sleep and wake up next to the towel for 5 consecutive days. Cont

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Those who have received sufficient explanation about the purpose and contents of this research, have the ability to consent, volunteered voluntarily after fully understanding, and agreed to participate in writing.

Exclusion criteria

Exclusion criteria: Volunteers will be excluded from study participation if they: 1) refuse to participate in the study; 2) cannot detect the scent of bergamot essential oil; 3) sensitive the aroma of bergamot oil used in the study; 4) are using sleep medication; 5) have hypertension, seizure disorders, or other chronic diseases; 6) have hypersensitivity to alcohol-based products; 7) test positive for allergic reactions at study registration; or 8) are deemed ineligible by principal investigator for other reasons not listed above.

Design outcomes

Primary

Measure	Time frame
Assess sleep quality and morning awakening using the OSA sleep inventory MA version	—

Secondary

Measure	Time frame
Assess stress and sleep using DASS-21, Subjective Happiness Scale, and VAS	—

Countries

Japan

Contacts

Public ContactNobuyuki Wakui

Hoshi University Practical Education and Research Division

n-wakui@hoshi.ac.jp03-5498-5760

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026