Lavender Oil for Sleep and Anxiety: What Trials Found
What clinical trials and reviews found about lavender oil for sleep and anxiety, with inhaled and massage studies kept apart from trials of a specific oral lavender oil capsule.
Content last updated . This page has not been medically reviewed.
Safety first. Supplements can cause side effects and interact with medicines. Read mushroom safety and interactions before you use any mushroom product.
Safety first. Lavender oil from a bottle is not for swallowing. Poison Control describes an 18-month-old boy who became extremely drowsy and confused after swallowing a small amount of lavender extract used as a home fragrance. [1] If a child or pet may have swallowed any essential oil, call Poison Help at 1-800-222-1222 (US). Call 911 for collapse, a seizure or trouble breathing. See Poisoning: what to do first. Long-lasting anxiety or poor sleep deserves a conversation with a clinician. In the US, call or text 988 if you are in crisis.
Which plant and which forms
Most research uses Lavandula angustifolia Mill. (English lavender) in the mint family, Lamiaceae. [3] The European Medicines Agency (EMA) describes the oil as obtained by passing steam through the flowering tops. [4] Trials fall into three groups, and one group's result does not carry over to another:- Inhaled (aromatherapy): the scent is breathed in.
- Massage: oil in a carrier is rubbed into the skin.
- Oral capsule: a standardized lavender oil product made for medical use. It is not the same as essential oil in a bottle. The authors of one pooled analysis say the results cannot be generalized to other lavender oil products. [5]
Traditional use
Traditional use only, not proof. NCCIH says lavender's scent has commonly been used in bath products, perfumes and aromatherapy. [2] The EMA committee accepted lavender oil medicines for mild stress and to aid sleep because of long-standing use (at least 30 years, including 15 in the EU), not because trials were convincing. [4] It added that studies were too small to establish an effect. [4]What trials and reviews found
| Question | What the source found | Strength of evidence | Population and form studied |
|---|---|---|---|
| Anxiety, oral capsule | Three pooled placebo-controlled trials found the capsule better than placebo on an anxiety rating scale, with similar rates of side effects. [5] NCCIH notes small studies and a lack of independent funding. [2] | Promising but limited | 697 patients with subthreshold anxiety; 80 mg per day for 10 weeks [5] |
| Anxiety disorder, oral capsule vs a prescription medicine | In one 6-week trial, scores fell by a similar amount with the capsule and with lorazepam. [6] A review of 29 trials of 12 herbs called its results preliminary. [7] | Promising but limited | Adults with generalized anxiety disorder; one trial [6] |
| Anxiety, inhaled lavender | A 2019 review of 65 randomized trials found inhalation lowered anxiety scores, but most trials had a high risk of bias. [8] | Mixed | Anxiety-inducing settings and activities; inhaled oil [8] |
| Anxiety, massage | Reviewers could not tell whether any benefit came from lavender itself. [8] | Insufficient evidence to separate lavender from massage | Massage with lavender oil [8] |
| Sleep, inhaled | A review of 34 studies found inhaled aromatherapy improved sleep problems, and lavender had the largest effect among single scents. [9] Reviews in adults and older adults also found better sleep quality, though they cover several scents. [10][11] | Mixed to promising but limited | Adults and older adults; several scents and methods |
| Sleep, oral capsule | In the pooled anxiety trials, sleep improved without sedation, as a secondary effect of lower anxiety. [5] | Promising but limited | People with anxiety, not people chosen for insomnia [5] |
| Insomnia, inhaled, small trial | Both groups in a pilot trial improved in self-rated sleep time and sleep efficiency, and the lavender group also gained significantly in overall quality of life. [12] | Insufficient evidence | 35 postmenopausal women with insomnia; lavender or sunflower oil placebo inhaled for 29 days [12] |
Why the results are hard to read
Most of the randomized trials in the 2019 review had a high risk of bias. [8] Trials often rely on self-reported scores, and a scent is hard to hide from a comparison group. Reviews group different scents, doses and settings together, so a single lavender-specific answer for sleep is hard to pull out. Proper evidence not found for large trials of bottled lavender oil in people with diagnosed insomnia. We searched PubMed on 2026-10-23 for lavender oil insomnia trials and found reviews and small trials only.What a reader can safely do
Ask a clinician or pharmacist before adding any lavender product, especially if you take sedatives or sleep medicines. Never stop a prescribed medicine on your own; ask the prescriber. For sleep routines, see sleep hygiene. For anxiety, see anxiety disorders. A wider view is in essential oils for sleep and essential oils for anxiety and mood, and the oil itself is covered in lavender oil: evidence and safety.Frequently asked questions
Does lavender oil help you sleep?
It is not shown reliably. NCCIH says it is unclear whether lavender aromatherapy helps sleep quality or insomnia. [2] Reviews of aromatherapy found better sleep quality, with lavender among the scents studied, but most cover several scents and methods. [9][11]
Does lavender oil help anxiety?
A specific oral capsule product did better than placebo in pooled trials. [5] For inhaled lavender, a 2019 review found lower anxiety scores but a high risk of bias in most trials. [8]
Is the lavender capsule in studies the same as bottled essential oil?
No. The capsule is a standardized product made for medical use, and its authors say the results cannot be generalized to other lavender oil products. [5] We do not advise swallowing essential oil from a bottle.
Can lavender replace anxiety medicine?
Trials do not show that. One 6-week trial compared a lavender capsule with lorazepam in adults with generalized anxiety disorder. [6] Do not stop or change a prescribed medicine without asking the prescriber or pharmacist.
Is lavender oil safe in pregnancy or for children?
Little is known in pregnancy. [2] The EMA says lavender oil medicines should only be used in adults and children over 12. [4] Ask a clinician first.
More details: evidence, limits and cautions
The details behind this page: cautions, limits of the evidence and where sources disagree. Open any note to read it.
Safety and who should ask first
- Side effects. NCCIH says oral lavender products may cause diarrhea, headache, nausea or burping, and aromatherapy may cause headache or coughing. [2]
- Medicines and surgery. NCCIH says there are theoretical reasons lavender might interact with some sedative drugs or herbs, which matters before surgery. [2] This is a theoretical risk, not a documented one. The EMA monograph lists no interactions reported. [13] Tell the surgical team and see how interactions work and supplements before surgery.
- Drowsiness. The EMA monograph says lavender oil medicines may impair the ability to drive and use machines. [13]
- Pregnancy and breastfeeding. NCCIH says little is known about safety, and the EMA does not recommend lavender oil medicines in pregnancy or breastfeeding. [2][13] See pregnancy and breastfeeding.
- Children. The EMA says lavender oil medicines are only for adults and children over 12. [4] See essential oils around babies and children.
- Skin. Topical lavender can cause allergic skin reactions. [2] See lavender and tea tree oils: skin reactions.
- Older adults, liver and kidney conditions: not described in the sources we read.
References
- Essential oils: Poisonous when misused (Poison Control). Read 2026-10-23.
- Lavender: Usefulness and Safety (NCCIH, last updated February 2025). Read 2026-10-23.
- GBIF Backbone Taxonomy record for Lavandula angustifolia Mill. (species key 2927305). Read 2026-10-23.
- Lavandulae aetheroleum, lavender oil: summary for the public (EMA HMPC, 2014). Read 2026-10-23.
- Efficacy of an oral lavender oil capsule product in subthreshold anxiety: meta-analysis of randomised, placebo-controlled trials. Eur Arch Psychiatry Clin Neurosci 2019. PubMed 29150713. Read 2026-10-23.
- A multi-center, double-blind, randomised study of an oral lavender oil preparation compared with lorazepam for generalized anxiety disorder. Phytomedicine 2010. PubMed 19962288. Read 2026-10-23.
- Medicinal herbs for the treatment of anxiety: a systematic review and network meta-analysis. Pharmacol Res 2022. PubMed 35378276. Read 2026-10-23.
- Effects of lavender on anxiety: a systematic review and meta-analysis. Phytomedicine 2019. PubMed 31655395. Read 2026-10-23.
- A systematic literature review and meta-analysis of the clinical effects of aroma inhalation therapy on sleep problems. Medicine (Baltimore) 2021. PubMed 33655928. Read 2026-10-23.
- Effect of aromatherapy on sleep quality of adults and elderly people: a systematic literature review and meta-analysis. Complement Ther Med 2021. PubMed 34166869. Read 2026-10-23.
- Effects of aromatherapy on sleep quality in older adults: a meta-analysis. Medicine (Baltimore) 2024. PubMed 39654196. Read 2026-10-23.
- Effect of a lavender essential oil and sleep hygiene protocol on insomnia in postmenopausal women: a pilot randomized clinical trial. Explore (NY) 2024. PubMed 37495431. Read 2026-10-23.
- Community herbal monograph on Lavandula angustifolia Miller, aetheroleum (EMA/HMPC/143181/2010). Read 2026-10-23.