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Stress and mood · Worry

Lavender oil capsules for a worried mind: what the trials show

Silexan is a specific lavender oil preparation in capsules, studied in more than a thousand people with anxiety. It is not the same as aromatherapy oil. Here is what the trials found, and where it fits.

By Kymata Health Editorial Sources cited inline Prices checked Oct 29, 2026

Quick answer

The quick answer

  • Across trials of 1,213 people, Silexan lowered anxiety scores more than placebo, with side effects similar to placebo.
  • In one trial in generalized anxiety disorder it did about as well as a standard prescription comparison.
  • It did not cause drowsiness or dependence in trials; burping with a lavender taste was common.
  • Persistent anxiety deserves a clinician. Cognitive behavioural therapy has strong evidence.

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Story

Why it gets attention

Unlike many herbal products, Silexan has been tested in large, placebo-controlled trials, including one against a standard prescription medicine.

It is sold in the US over the counter. It is not a substitute for care when anxiety is severe, and it has not been studied in pregnancy.

The plan

If you want to try it

  1. Step 1Use the studied preparation

    Silexan, the preparation used in the trials; aromatherapy oils are not for swallowing.

  2. Step 2Give it time

    Trials ran 8–10 weeks; effects built over weeks.

  3. Step 3Keep the basics

    Sleep, exercise, less caffeine and alcohol.

  4. Step 4See a clinician

    If worry is constant, causes panic, or affects work and relationships.

The stack

The lavender option

One preparation with trial data; the basics and therapy around it matter as much. Evidence grade: A strong · B moderate · C limited · D preliminary.

  1. 01

    Lavender oil capsules (Silexan)

    For a persistently worried, restless mind; does not cause drowsiness or dependence in trials.

    What the research shows: A 2023 meta-analysis (1,213 people with anxiety disorders or subthreshold anxiety) found Silexan lowered anxiety scores more than placebo, with responders 1.34 times as common and side effects similar to placebo. In one trial it performed about as well as a standard prescription comparison. (PMID 36717399, PMID 24456909)

    • Burping with a lavender taste is the most common side effect.
    • Do not combine with sedatives or alcohol without asking; not studied in pregnancy or breastfeeding.

    In the studies

    • Trials gave 80 mg a day of Silexan for 8 to 10 weeks; one trial also tested 160 mg a day.

    A record of what researchers gave, in whom; not a dose for you.

    Evidencemoderate (Grade B)

    Quick pick · HerbsPro

    Brands that pay us are shown first in this list.

    Nature's Way CalmAid (Silexan lavender oil), 90 Softgels

    1 softgel: 80 mg Silexan English lavender (Lavandula angustifolia) flower oil

    $39.65price checked Oct 15, 2026 on HerbsPro’s site

    Shop at HerbsPro (paid link, opens in new tab)

    We may earn a commission if you buy through these links. That never changes a rank. See how partner links work.

Listed picks above total $39.65 at one-time prices on the brands' own sites; most hold about a month of servings at the label's serving size.

Left out

What we left out, and why

Lavender aromatherapy and sprays
Pleasant, but different from the oral preparation studied in trials.
CBD for anxiety
Small trials with mixed results, inconsistent product labeling and liver and drug-interaction concerns at higher doses.

Safety

Safety and interactions

  • If you have thoughts of harming yourself or feel unable to keep yourself safe, call or text 988 (the Suicide and Crisis Lifeline in the US) or your local emergency number now.
  • Never stop or change an antidepressant or other prescribed medicine without your prescriber; stopping suddenly can cause withdrawal effects and relapse.
  • Low mood, anxiety or exhaustion that lasts more than two weeks, or gets in the way of work, relationships or sleep, deserves a clinician. Talking therapies and medicines have strong evidence.
  • Not medical advice. Check with your clinician or pharmacist before starting supplements if you take prescription medicines, are pregnant or breastfeeding, or have liver, kidney or thyroid disease.
  • Supplements are not evaluated by the FDA to diagnose, treat, cure or prevent any disease.

Questions

Frequently asked questions

Does lavender oil work for anxiety?

The Silexan lavender oil preparation lowered anxiety scores more than placebo across trials of 1,213 people, mostly at 80 mg a day (PMID 36717399).

Is Silexan safe to take daily?

In trials of 8–10 weeks it was well tolerated, with burping the most common side effect, and no drowsiness or dependence. It has not been studied in pregnancy.

Sources

Sources

Studies were checked on PubMed on Oct 31, 2026. Product prices come from each brand's own site, read on Oct 29, 2026; each product shows the date its price was read.

  1. 1Dold M et al. Efficacy of Silexan in anxiety disorders: meta-analysis of randomized placebo-controlled trials. Eur Arch Psychiatry Clin Neurosci 2023 (opens in new tab)PMID 36717399
  2. 2Kasper S et al. Lavender oil preparation Silexan in generalized anxiety disorder: randomized, double-blind comparison with placebo and paroxetine. Int J Neuropsychopharmacol 2014 (opens in new tab)PMID 24456909

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