Research synthesisModerate evidenceModerate effect3 studies · 3 beneficial · 0 neutral · 0 harmful
Across 3 randomized controlled trials, lavender aromatherapy showed moderate, beneficial effects on reducing fatigue in clinical populations. All 3 studies reported statistically significant improvements, with effect sizes consistently moderate. The most-studied dosing regimen was nightly inhalation (2–20 minutes) over a median duration of 7 days, primarily in adults with hypertension, hematological malignancies, or implantable cardioverter defibrillators.
- Effective dose range: 2–20 minutes of inhalation per day, typically before bedtime
- Studied populations: hypertensive adults aged 40–60 years, patients with hematological malignancies undergoing chemotherapy, and patients with implantable cardioverter defibrillators
Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed). All studies used lavender essential oil via inhalation; oral or topical forms have not been evaluated for fatigue reduction.
Generated Jul 13, 2026