English Lavender

BotanicalBest before bed

What is it

English lavender (Lavandula angustifolia) is an aromatic perennial herb cultivated for its essential oil and dried flowers. It is best studied for anxiety, sleep, and topical applications.

Evidence for 2 uses

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Generalized anxiety / subsyndromal anxiety

Good Evidence

Oral lavender oil (Silexan) trials show reductions in anxiety symptoms comparable to low-dose anxiolytics, with effects emerging over 1-2 weeks.

Sleep quality

Good Evidence

Aromatherapy and oral lavender trials suggest modest improvements in sleep quality, especially in mild insomnia.

How it works

Lavender essential oil contains linalool and linalyl acetate, which act on GABA and other neurotransmitter systems to produce calming and mild sedative effects. Oral lavender oil (in proprietary preparations like Silexan) has shown anxiolytic effects in clinical trials. Topically and aromatherapeutically, lavender shows benefits for sleep and mild anxiety. Effects on more severe anxiety are modest but real.

Dosage

Oral lavender oil (Silexan): 80-160 mg per day. Aromatherapy use: a few drops in a diffuser or pillow. Topical use: diluted in carrier oil.

When and how to take it

WHEN: For anxiety, daily oral use over 2+ weeks; for sleep, evening aromatherapy or oral capsules 1 hour before bed. HOW: With water (oral); diffused or applied topically (diluted).

3 commercial forms

Compare the main delivery options and what they’re best suited for.

Silexan (oral lavender oil capsule)

Most-studied form for anxiety.

Standardized preparation used in most clinical trials.

Essential oil (aromatherapy/topical)

Traditional aromatherapy use.

Aerosol inhalation; topical absorption.

Dried flowers / tea

Gentle traditional preparation.

Mild concentration of active compounds.

Safety

Generally well tolerated. Common side effects of oral lavender include eructation (burping with lavender taste) and mild GI symptoms. Some case reports link prepubertal gynecomastia to topical lavender oil use, though causation is debated.

Who should be cautious

Avoid topical undiluted oil on broken skin. Caution in pregnancy (limited oral safety data; aromatherapy generally considered acceptable). Discontinue if any breast enlargement in prepubertal boys with topical use.

Interactions

May enhance effects of CNS depressants (benzodiazepines, sleep aids, alcohol). Theoretical interaction with anticoagulants.

Frequently asked questions

Will lavender help me sleep?⌄

Modestly, in many people. It is most useful for mild sleep difficulty rather than serious insomnia.

Is lavender safe for kids?⌄

Aromatherapy use is generally considered safe at modest amounts. Topical use of undiluted oil is not recommended on young children; case reports have linked it to hormonal effects.

References

English Lavender on Wikidata — Wikidata link

English Lavender on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on English Lavender (PubMed search) — PubMed link

Track English Lavender with Pilora

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.