Lavender: Uses, Benefits, Dosage & Safety
Last updated: June 2026 · Reviewed by the FactoWiki Editorial Team for clarity and source accuracy
Quick summary
Lavender, taken as a standardised oral capsule (not just aromatherapy), has surprisingly good evidence for reducing anxiety, comparable to some low-dose medications in trials. It is also used topically and by inhalation.
What is Lavender?
Lavender (Lavandula angustifolia) is a fragrant herb long used in aromatherapy. A standardised oral lavender oil preparation has been developed and studied specifically for anxiety, and lavender is also used topically and via inhalation for relaxation and sleep.
What Lavender is commonly used for
In supplements, Lavender is most often included for brain & memory support. It is used as nutritional support, not as a treatment for any medical condition — the distinction matters, because the claims on a sales page are often stronger than the evidence allows.
How Lavender works
Lavender's active compounds (such as linalool) appear to influence calming neurotransmitter pathways and the nervous system's stress response. The oral standardised oil is absorbed and acts systemically, while inhaled lavender works partly through scent-linked relaxation.
What the evidence says
Here's an honest snapshot of what published research suggests about Lavender — including where the evidence is limited.
- Standardised oral lavender oil has good trial evidence for reducing generalised anxiety, in some studies comparable to low-dose anti-anxiety medication. (PubMed research)
- Inhaled and topical lavender have weaker but supportive evidence for relaxation and sleep quality. (PubMed research)
Typical dosage used in studies
The studied oral preparation is typically 80 mg/day of the standardised lavender oil. This is research information for context, not a recommendation — confirm what's appropriate for you with a healthcare professional.
Side effects and safety
Oral lavender oil is generally well tolerated; the main side effect is mild burping with a lavender taste. Topical lavender can occasionally cause skin irritation.
Medication interactions and who should avoid Lavender
Medication & safety check
It may add to the effect of sedatives. There has been some debate about topical lavender and hormones in young children, so caution is reasonable there.
This is general information, not personal medical advice. If you take any medication, confirm it's safe to combine with Lavender with your doctor or pharmacist first.
Sources & further reading
The summary above is drawn from peer-reviewed research and authoritative references. For general, authoritative background you can also consult:
- PubMed research on Lavender
- NIH Office of Dietary Supplements
- NIH National Center for Complementary and Integrative Health
- MedlinePlus (U.S. National Library of Medicine)
Frequently asked questions
Does lavender really reduce anxiety?
Standardised oral lavender oil has genuinely good trial evidence for anxiety, which sets it apart from most calming herbs.
Is aromatherapy lavender as effective?
Inhaled lavender has weaker evidence than the standardised oral capsule.
What dose is used?
The studied oral lavender oil dose is about 80 mg/day.
Is lavender safe?
Yes, generally; oral capsules may cause lavender-flavoured burping.
Can I take it with sleeping pills?
It may add to sedation, so check with a doctor before combining.
Supplements that contain Lavender
On FactoWiki, Lavender appears in these reviewed products. Each review breaks down the full formula, pricing and safety.
- Kerassentials — Nail & Foot Care
- ProNail Complex — Nail & Foot Care
Related ingredients to explore
Ingredients often studied or formulated alongside Lavender — useful for understanding the full picture of a formula.