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A comparative evaluation of Lavender (Lavendula augustifolia) and Geranium (Perlargonium species e.g. P. odoratissiumum, P. extipulatum, P. x fragrans) aromatherapy oils in participants with mild to moderate insomnia

A comparative evaluation of Lavender (Lavendula augustifolia) and Geranium (Perlargonium species e.g. P. odoratissiumum, P. extipulatum, P. x fragrans) aromatherapy oils in participants with mild to moderate insomnia

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN75633164
Enrollment
12
Registered
2005-11-16
Start date
2005-12-01
Completion date
Unknown
Last updated
2016-11-28

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

Conditions

Insomnia Mental and Behavioural Disorders Insomnia

Interventions

Aromatherapy oils - lavender oil versus geranium oil versus almond oil (placebo)

Sponsors

University of the West of England (UK)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Healthy individuals 2. Aged 20-55 years 3. Informed consent 4. Mild to moderate persistent insomnia defined as a Pittsburgh Sleep Quality Index Score within the range 5-14 assessed over the preceding month, and with a minimum of 3 weeks duration

Exclusion criteria

Exclusion criteria: 1. Anosmic 2. Menopausal women 3. Pregnancy (or planning to become pregnant during the trial period) 4. Children under 3 years 5. Acutely ill 6. Systemic illness affecting their sleep 7. Recently treated with aromatherapy 8. Suffering from any recognised sleep pathology other than insomnia 9. Taking long-term medication (except oral contraceptives) or any short-term medication which may affect their natural sleep patterns 10. Previous hypersensitivity or allergy to aromatherapy or related products

Design outcomes

Primary

MeasureTime frame
1. Actigraphic data obtained from wrist worn actigraphs 2. Subjective sleep status assessed with the PSQI

Secondary

MeasureTime frame
1. Leeds Sleep Evaluation Questionnaire 2. Borkovec and Nau Questionnaire

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026