Lavender oil (oral, Silexan)

Also known as: Silexan, Lavandula angustifolia

A specific oral lavender oil preparation studied for anxious feelings. Aromatherapy is not the same.

Common forms: Oral capsules (80 mg Silexan)

Draft summary, not yet reviewed by a qualified health professional · Last updated 2026-11-03

Talk to a healthcare professional first

This information is for education only and is not medical advice, diagnosis, or treatment. Supplements can interact with medications and health conditions. Check with your doctor or pharmacist before starting anything, especially if you take medication, are pregnant or breastfeeding, or have a health condition. These statements have not been evaluated by the FDA; supplements are not intended to diagnose, treat, cure, or prevent any disease.

What the evidence says

Stress & anxious feelings

BModerate evidence

Meta-analyses found oral Silexan reduced anxiety scores versus placebo in people with anxiety, with low rates of side effects.

Dose used in studies: 80–160 mg/day Silexan
Time to effect: 2–6 weeks

Studies (2)

Lavender Oil Preparation (Silexan) for Treating Anxiety: An Updated Meta-Analysis — J Clin Psychopharmacol, 2017 · Meta-analysis · PMID 27861196
Effects of lavender on anxiety: A systematic review and meta-analysis — Phytomedicine, 2019 · Meta-analysis · PMID 31655395

Safety

Common side effects

Burping (lavender taste)
Stomach upset

Avoid or ask your doctor first if

Do not swallow undiluted essential oils — only use oral preparations made for ingestion

Pregnancy & breastfeeding

Not enough safety data — avoid unless your provider recommends it.

Medication interactions

moderateSedatives / sleep medications: May add to the effects of sedatives.

This list covers common medication classes only and is not exhaustive.

Buying tips

Look for third-party testing seals (USP Verified, NSF Certified, or Informed Choice) and match the form and dose used in studies.

Where to buy (affiliate)