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This fact sheet provides basic information about lavender—common names, what the science says, potential side effects and cautions, and resources for more information.
Lavender is native to the Mediterranean region. It was used in ancient Egypt as part of the process for mummifying bodies. Lavender's use as a bath additive originated in Persia, Greece, and Rome. The herb's name comes from the Latin lavare, which means «to wash.»
Historically, lavender was used as an antiseptic and for mental health purposes. Today, lavender is used as a folk or traditional remedy for anxiety, restlessness, insomnia, depression, headache, upset stomach, and hair loss.
Lavender is most commonly used in aromatherapy, in which the scent of the essential oil from the flowers is inhaled. The essential oil can also be diluted with another oil and applied to the skin. Dried lavender flowers can be used to make teas or liquid extracts that can be taken by mouth.
What the Science Says
- There is little scientific evidence of lavender's effectiveness for most health uses.
- Small studies on lavender for anxiety show mixed results.
- Some preliminary results indicate that lavender oil, combined with oils from other herbs, may help with hair loss from a condition called alopecia areata.
Side Effects and Cautions
- Topical use of diluted lavender oil or use of lavender as aromatherapy is generally considered safe for most adults. However, applying lavender oil to the skin can cause irritation. There have been reports that topical use can cause breast growth in young boys.
- Lavender oil may be poisonous if taken by mouth.
- When lavender teas and extracts are taken by mouth, they may cause headache, changes in appetite, and constipation.
- Using lavender with sedative medications may increase drowsiness.
- Tell all your health care providers about any complementary health approaches you use. Give them a full picture of what you do to manage your health. This will help ensure coordinated and safe care. For tips about talking with your health care providers about complementary health approaches, see NCCIH's Time to Talk campaign.
For More Information
The NCCIH Clearinghouse provides information on NCCIH and complementary health approaches, including publications and searches of Federal databases of scientific and medical literature. The Clearinghouse does not provide medical advice, treatment recommendations, or referrals to practitioners.
A service of the National Library of Medicine (NLM), PubMed® contains publication information and (in most cases) brief summaries of articles from scientific and medical journals.
Office of Dietary Supplements (ODS), National Institutes of Health (NIH)
ODS seeks to strengthen knowledge and understanding of dietary supplements by evaluating scientific information, supporting research, sharing research results, and educating the public. Its resources include publications (such as Dietary Supplements: What You Need to Know), fact sheets on a variety of specific supplement ingredients and products (such as vitamin D and multivitamin/mineral supplements), and the PubMed Dietary Supplement Subset.
PubMed Dietary Supplement Subset: ods.od.nih.gov/Research/PubMed_Dietary_Supplement_Subset.aspx
NIH National Library of Medicine's MedlinePlus
- Henley DV, Lipson N, Korach KS, et al. Prepubertal gynecomastia linked to lavender and tea tree oils. New England Journal of Medicine. 2007;356(5):479–485.
- Lavender. Natural Medicines Comprehensive Database Web site. Accessed at www.naturaldatabase.com on August 4, 2009.
- Lavender (Lavandula angustifolia Miller). Natural Standard Database Web site. Accessed at www.naturalstandard.com on August 3, 2009.
- Lavender flower. In: Blumenthal M, Goldberg A, Brinckman J, eds. Herbal Medicine: Expanded Commission E Monographs. Newton, MA: Lippincott Williams & Wilkins; 2000:226–229.
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