Skip to main content

Lemon Balm

Scientific Name(s): Melissa officinalis L.
Common Name(s): Balm, Lemon balm, Melissa, Sweet balm

Medically reviewed by Last updated on Jan 31, 2022.

Clinical Overview


Primary interest in lemon balm surrounds its effects on the central nervous system. One small study demonstrated decreased stress and agitation in patients with dementia and Alzheimer disease. Another small trial supports a potential cholesterol benefit. Lemon balm cream has shown some efficacy in herpes virus lesions in a few small placebo-controlled trials.


Crude lemon balm herb is typically dosed at 1.5 to 4.5 g/day. Doses of 600 to 1,600 mg extract have been studied in trials. A standardized preparation of lemon balm (80 mg) and valerian extract (160 mg) has been given 2 or 3 times/day as a sleep aid, and has also been studied in children. A 1% extract cream has been studied as a topical agent for treatment of herpes virus lesions.


Contraindications have not yet been identified.


Information regarding safety and efficacy in pregnancy and lactation is lacking.


None well documented.

Adverse Reactions

Clinical trials generally report no adverse reactions.


Research reveals little or no information regarding toxicology with the use of this product.

Scientific Family

  • Lamiaceae (mint)


Lemon balm is a low-growing perennial herb with ovate- or heart-shaped leaves that emit a lemon odor when bruised. The small yellow or white flowers are attractive to bees and other insects. It is indigenous to the Mediterranean region and western Asia, and widely naturalized in Europe, Asia, and North America. The leaves are harvested before flowering and used medicinally.1


Lemon balm has been used in herbal medicine since the times of Pliny (Roman, AD 23-79), Dioscorides (Greek, AD 40-90), Paracelsus (Austrian 1493-1541), and John Gerard (English, 1545-1612). The name Melissa corresponds to the Greek word for bee, while balm is a contraction of balsam. The plant has culinary and medicinal uses, with principal historical medicinal uses being carminative, diaphoretic, and antipyretic.2


Lemon balm leaves contain 0.2% to 0.3% of a lemon-scented essential oil similar to that of lemon grass. Major mono- and sesquiterpenes include geranial, neral, beta-caryophyllene, beta-caryophyllene oxide, linalool, citronellal, nerol, and geraniol.3, 4, 5 R(+)-methyl citronellate is characteristic of Melissa oil and distinguishes it from lemon grass oil.6, 7 Flavonoids, oleanane, and triterpenes have also been isolated from the plant.4, 8 Major nonvolatile constituents are caffeic acid and its di- and trimeric derivatives, including rosmarinic acid and melitric acids A and B.7, 9, 10

Uses and Pharmacology


Rosmarinic acid was found to inhibit the C3 and C5 convertase steps in the complement cascade.(27, 28, 29) This action may play a role in the anti-inflammatory action of Melissa extract, because the action was observed in vitro and in vivo in rats with oral administration of the compound.


Animal data

Lemon balm has antiviral activity against a variety of viruses, including herpes simplex virus (HSV) and HIV-1.(11, 12) The activity has been attributed to caffeic acid and its di- and trimeric derivatives, as well as to tannins. A concentration-dependent inhibition of HSV-2 proliferation by lemon balm essential oil has been demonstrated, possibly due to the citral or citronellal components.(13) Activity against bacteria and fungi has been evaluated with varying results.(4, 8, 14) Activity against culex mosquito larvae has also been demonstrated.(15)

Clinical data

Placebo-controlled trials have shown symptomatic improvement for herpes virus lesions after application of a standardized lemon balm cream applied 2 to 4 times daily for 5 to 10 days.(16, 17, 18)


In vitro antioxidant activity has been described for lemon balm essential oil and its extracts.(4, 10, 14, 30)


Activity against human and mouse cancer cell lines has been demonstrated in vitro.(5)


In hyperlipidemic rats and mice, lemon balm extracts improved the lipid profile as well as liver enzyme markers (AST, ALT, alkaline phosphatase) and increased glutathione levels in the tissue.(31, 32)

A double-blind, randomized, placebo controlled trial (n=58) in borderline hyperlipidemic adults documented a significant improvement in low-density lipoprotein (LDL) cholesterol levels (P=0.022) as well as AST (P=0.009) with administration of M. officinalis leaf powder (500 mg 3 times daily for 2 months) compared to placebo. Baseline mean LDL dropped by 13.96 mg/dL with the intervention compared to a 1.17 mg/dL increase with placebo. Similarly, mean AST decreased 1.35 units/L with treatment and increased 2.23 units/L with placebo. No significant differences were found between groups in total cholesterol (TC), high-density lipoprotein (HDL), LDL:HDL, TC:HDL, fasting blood sugar, triglycerides, ALT, creatinine, body mass index, or physical activity. No serious adverse events were reported.(41)

CNS effects

Animal data

The lyophilized hydroalcoholic extract, which does not contain the volatile oil components, exhibited sedative activity in several mouse models when given intraperitoneally.(19) This extract was also active in an acetic acid writhing analgesia assay but not in a hot plate test. The volatile oil of the plant had much weaker activity or was inactive in the same assays.

Clinical data

In a series of trials investigating the effects of lemon balm extract on laboratory-induced stress, a dose-dependent effect was demonstrated for single doses of Melissa officinalis.(2, 20, 21) Cholinergic receptor-binding properties have also been demonstrated.(20) With 600 mg of extract, increased calmness and decreased alertness were demonstrated compared with placebo. With 300 mg, no modulation of stress was found, but speed and accuracy of mathematical processing increased.(21) At the highest dosage of 1,600 mg, a paradoxically negative effect on mood resulted, with reduced alertness.(20) Lemon balm 80 mg combined with valerian 160 mg taken for 1 month significantly improved sleep quality compared with baseline (P = 0.001) and placebo (P = 0.0001) in women experiencing sleep disruption/disorders subsequent to natural menopause. The placebo group in this randomized trial (n = 100) also experienced a significant improvement in sleep scores compared with baseline (P = 0.0001). No adverse events were reported.(40)

In patients with mild to moderate Alzheimer disease, 60 drops of lemon balm extract (citral 500 mcg/mL) increased cognitive function and decreased agitation over placebo.(22, 23, 24) Essential oil of lemon balm applied to the faces of patients with dementia decreased agitation compared with placebo.(25, 26) In a randomized, self-control trial among 49 nursing home patients with and without dementia, lemon balm essential oil did not reduce the frequency of agitation in patients overall compared to when they received lavender or placebo treatments. However, when stratified by dementia status, lemon balm significantly improved the neuropsychiatric index (NPI) total score, NPI irritability score, the agitation total score, and the physical non-aggressive behaviour score in patients without dementia compared to those with dementia, whereas lavender was more effective in dementia patients. The majority of patients were female (75.5%); comorbid diagnoses included depression (57.1%) and anxiety (34.7%).(42) In contrast, a Cochrane review found no robust evidence to support the benefit of aromatherapy (including lemon balm aromatherapy at concentrations of less than 2% and 10%) for agitation, overall behavioral or psychological symptoms, quality of life, or activities of daily living in patients with dementia.(43)

Of 10 randomized controlled trials identified in a systematic review, 6 (n=435) provided sufficient data to conduct a meta-analysis for the effect of lemon balm on anxiety and/or depression. The majority of patients (78.5%) were adults and 15.8% were adolescents (the age of patients was not reported in one study). Compared to placebo, lemon balm resulted in significantly lower mean anxiety scores (P=0.003; 5 studies, N=375, high heterogeneity) and depression scores (P=0.0005; 3 studies, N=233, no heterogeneity) overall. When stratified by temporality, patients with acute but not chronic depression benefited from supplementation (P=0.0007), while neither acute or chronic anxiety patients per se exhibited significant benefit compared to controls.(44)


The contractility of rat ileum was reduced with essential oil of lemon balm and its citral extract.(33) Babies with colic given a combination preparation containing lemon balm extract as well as 2 other extracts showed improved symptoms.(34)


Crude lemon balm herb typically is dosed at 1.5 to 4.5 g/day. Doses of 600 to 1,600 mg have been studied in trials. A standardized preparation of lemon balm 80 mg and valerian extract 160 mg, Euvegal Forte, has been given 2 or 3 times/day as a sleep aid, and has also been studied in children.35, 36, 37 A 1% extract cream has been studied as a topical agent for herpes.17

Pregnancy / Lactation

Information regarding safety and efficacy in pregnancy and lactation is lacking.


None well documented. A small animal trial evaluated the cardiac effects of lemon balm and reported possible cardiac muscarinic receptor stimulation or calcium channel-dependent blockage.38

Adverse Reactions

Most clinical trials report no adverse reactions.2, 20, 37


Melissa extract was not found to be genotoxic in a screen of several medicinal plants.39



This information relates to an herbal, vitamin, mineral or other dietary supplement. This product has not been reviewed by the FDA to determine whether it is safe or effective and is not subject to the quality standards and safety information collection standards that are applicable to most prescription drugs. This information should not be used to decide whether or not to take this product. This information does not endorse this product as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this product. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this product. This information is not specific medical advice and does not replace information you receive from your health care provider. You should talk with your health care provider for complete information about the risks and benefits of using this product.

This product may adversely interact with certain health and medical conditions, other prescription and over-the-counter drugs, foods, or other dietary supplements. This product may be unsafe when used before surgery or other medical procedures. It is important to fully inform your doctor about the herbal, vitamins, mineral or any other supplements you are taking before any kind of surgery or medical procedure. With the exception of certain products that are generally recognized as safe in normal quantities, including use of folic acid and prenatal vitamins during pregnancy, this product has not been sufficiently studied to determine whether it is safe to use during pregnancy or nursing or by persons younger than 2 years of age.

More about lemon balm

Related treatment guides

1. Melissa officinalis L. USDA, NRCS. 2008. The PLANTS Database (, 8 September 2008). National Plant Data Center, Baton Rouge, LA 70874-4490.
2. Kennedy DO, Wake G, Savelev S, et al. Modulation of mood and cognitive performance following acute administration of single doses of Melissa officinalis (Lemon balm) with human CNS nicotinic and muscarinic receptor-binding properties. Neuropsychopharmacology. 2003;28(10):1871-1881.12888775
3. Adzet T, Ponz R, Wolf E, Schulte E. Content and Composition of M. officinalis Oil in Relation to Leaf Position and Harvest Time1. Planta Med. 1992;58(6):562-564.17226523
4. Mimica-Dukic N, Bozin B, Sokovic M, Simin N. Antimicrobial and antioxidant activities of Melissa officinalis L. (Lamiaceae) essential oil. J Agric Food Chem. 2004;52(9):2485-2489.15113145
5. de Sousa AC, Alviano DS, Blank AF, Alves PB, Alviano CS, Gattass CR. Melissa officinalis L. essential oil: antitumoral and antioxidant activities. J Pharm Pharmacol. 2004;56(5):677-681.15142347
6. Holst J, Lindblad B, Bergqvist D, Garre K, Nielsen H, Hedner U, et al. Protamine neutralization of intravenous and subcutaneous low-molecular-weight heparin (tinzaparin, Logiparin). An experimental investigation in healthy volunteers. Blood Coagul Fibrinolysis. 1994;5(5):795-803.7865687
7. Fecka I, Turek S. Determination of water-soluble polyphenolic compounds in commercial herbal teas from Lamiaceae: peppermint, melissa, and sage. J Agric Food Chem. 2007;55(26):10908-10917.18052102
8. Mencherini T, Picerno P, Scesa C, Aquino R. Triterpene, antioxidant, and antimicrobial compounds from Melissa officinalis. J Nat Prod. 2007;70(12):1889-1894.18004816
9. Agata I, et al. Meltric acids A and B, new trimeric caffeic acid derivatives from Melissa officinalis. Chem Pharm Bull. 1993;41(9):1608.
10. Safra J, Pospísilová M, Honegr J, Spilková J. Determination of selected antioxidants in Melissae herba by isotachophoresis and capillary zone electrophoresis in the column-coupling configuration. J Chromatogr A. 2007;1171(1-2):124-132.17920611
11. Kucera LS, Herrmann EC Jr. Antiviral substances in plants of the mint family (labiatae). I. Tannin of Melissa officinalis. Proc Soc Exp Biol Med. 1967;124(3):865-869.4290277
12. Herrmann EC Jr, Kucera LS. Antiviral substances in plants of the mint family (labiatae). II. Nontannin polyphenol of Melissa officinalis. Proc Soc Exp Biol Med. 1967;124(3):869-874.4290452
13. Allahverdiyev A, Duran N, Ozguven M, Koltas S. Antiviral activity of the volatile oils of Melissa officinalis L. against Herpes simplex virus type-2. Phytomedicine. 2004;11(7-8):657-661.15636181
14. López V, Akerreta S, Casanova E, García-Mina JM, Cavero RY, Calvo MI. In vitro antioxidant and anti-rhizopus activities of Lamiaceae herbal extracts. Plant Foods Hum Nutr. 2007;62(4):151-155.17912643
15. Cetin H, Cinbilgel I, Yanikoglu A, Gokceoglu M. Larvicidal activity of some Labiatae (Lamiaceae) plant extracts from Turkey. Phytother Res. 2006;20(12):1088-1090.17009204
16. Wöbling RH, Leonhardt K. Local therapy of herpes simplex with dried extract from Melissa officinalis. Phytomedicine. 1994, 1:125-131.
17. Koytchev R, Alken RG, Dundarov S. Balm mint extract (Lo-701) for topical treatment of recurring herpes labialis. Phytomedicine. 1999;6(4):225-230.10589440
18. Gaby AR. Natural remedies for Herpes simplex. Altern Med Rev. 2006;11(2):93-101.16813459
19. Soulimani R, Fleurentin J, Mortier F, Misslin R, Derrieu G, Pelt JM. Neurotropic action of the hydroalcoholic extract of Melissa officinalis in the mouse. Planta Med. 1991;57(2):105-109.1891490
20. Kennedy DO, Little W, Haskell CF, Scholey AB. Anxiolytic effects of a combination of Melissa officinalis and Valeriana officinalis during laboratory induced stress. Phytother Res. 2006;20(2):96-102.
21. Kennedy DO, Little W, Scholey AB. Attenuation of laboratory-induced stress in humans after acute administration of Melissa officinalis (Lemon Balm). Psychosom Med. 2004;66(4):607-613.15272110
22. Akhondzadeh S, Noroozian M, Mohammadi M, Ohadinia S, Jamshidi AH, Khani M. Melissa officinalis extract in the treatment of patients with mild to moderate Alzheimer's disease: a double blind, randomised, placebo controlled trial. J Neurol Neurosurg Psychiatry. 2003;74(7):863-866.12810768
23. Dos Santos-Neto LL, de Vilhena Toledo MA, Medeiros-Souza P, de Souza GA. The use of herbal medicine in Alzheimer's disease-a systematic review. Evid Based Complement Alternat Med. 2006;3(4):441-445.17173107
24. Izzo AA, Capasso F. Herbal medicines to treat Alzheimer's disease. Trends Pharmacol Sci. 2007;28(2):47-48.17218017
25. Ballard CG, O'Brien JT, Reichelt K, Perry EK. Aromatherapy as a safe and effective treatment for the management of agitation in severe dementia: the results of a double-blind, placebo-controlled trial with Melissa. J Clin Psychiatry. 2002;63(7):553-558.12143909
26. Block KI, Gyllenhaal C, Mead MN. Safety and efficacy of herbal sedatives in cancer care. Integr Cancer Ther. 2004;3(2):128-148.15165499
27. Rampart M, Beetens JR, Bult H, Herman AG, Parnham MJ, Winkelmann J. Complement-dependent stimulation of prostacyclin biosynthesis: inhibition by rosmarinic acid. Biochem Pharmacol. 1986;35(8):1397-1400.3516156
28. Englberger W, Hadding U, Etschenberg E, et al. Rosmarinic acid: a new inhibitor of complement C3-convertase with anti-inflammatory activity. Int J Immunopharmacol. 1988;10(6):729-737.3198307
29. Peake PW, Pussell BA, Martyn P, Timmermans V, Charlesworth JA. The inhibitory effect of rosmarinic acid on complement involves the C5 convertase. Int J Immunopharmacol. 1991;13(7):853-857.1761351
30. Marongiu B, Porcedda S, Piras A, Rosa A, Deiana M, Dessì MA. Antioxidant activity of supercritical extract of Melissa officinalis subsp. officinalis and Melissa officinalis subsp. inodora. Phytother Res. 2004;18(10):789-792.15551397
31. Bolkent S, Yanardag R, Karabulut-Bulan O, Yesilyaprak B. Protective role of Melissa officinalis L. extract on liver of hyperlipidemic rats: a morphological and biochemical study. J Ethnopharmacol. 2005;99(3):391-398.
32. Lee J, Chae K, Ha J, et al. Regulation of obesity and lipid disorders by herbal extracts from Morus alba, Melissa officinalis, and Artemisia capillaris in high-fat diet-induced obese mice. J Ethnopharmacol. 2008;115(2):263-270.
33. Sadraei H, Ghannadi A, Malekshahi K. Relaxant effect of essential oil of Melissa officinalis and citral on rat ileum contractions. Fitoterapia. 2003;74(5):445-452.12837359
34. Savino F, Cresi F, Castagno E, Silvestro L, Oggero R. A randomized double-blind placebo-controlled trial of a standardized extract of Matricariae recutita, Foeniculum vulgare and Melissa officinalis (ColiMil) in the treatment of breastfed colicky infants. Phytother Res. 2005;19(4):335-340.16041731
35. Dressing H, Kohler S, Muller WE. Improvement of sleep quality with a high-dose valerian/lemon-balm preparation. A placebo-controlled double-blind study. Psychopharmakotherapie. 1996;3:123-130.
36. Cerny A, et al. Tolerability and efficacy of valerian/lemon balm in healthy volunteers (a double-blind, placebo-controlled, multicentre study). Fitoterapia. 1999;70:221-228.
37. Müller SF, Klement S. A combination of valerian and lemon balm is effective in the treatment of restlessness and dyssomnia in children. Phytomedicine. 2006;13(6):383-387.16487692
38. Gazola R, Machado D, Ruggiero C, Singi G, Macedo Alexandre M. Lippia alba, Melissa officinalis and Cymbopogon citratus: effects of the aqueous extracts on the isolated hearts of rats. Pharmacol Res. 2004;50(5):477-480.15458767
39. Ramos Ruiz A, De la Torre RA, Alonso N, Villaescusa A, Betancourt J, Vizoso A. Screening of medicinal plants for induction of somatic segregation activity in Aspergillus nidulans. J Ethnopharmacol. 1996;5;52(3):123-127.8771452
40. Taavoni S, Nazem egbatani N, Haghani H. Valerian/lemon balm use for sleep disorders during menopause. Complement Ther Clin Pract. 2013;19(4):193-196.24199972
41. Jandaghi P, Noroozi M, Ardalani H, Alipour M. Lemon balm: a promising herbal therapy for patients with borderline hyperlipidemia – a randomized double-blind placebo-controlled clinical trial. Complement Ther Med. 2016;26:136-140.27261994
42. Watson K, Hatcher D, Good A. A randomised controlled trial of Lavender (Lavandula angustifolia) and lemon balm (Melissa officinalis) essential oils for the treatment of agitated behaviour in older people with and without dementia. Complement Ther Med. 2019;42:366-373.30670268
43. Ball EL, Owen-Booth B, Gray A, Shenkin SD, Hewitt J, McCleery J. Aromatherapy for dementia. Cochrane Database Syst Rev. 2020;8(8):CD003150.32813272
44. Ghazizadeh J, Sadigh-Eteghad S, Marx W, et al. The effects of lemon balm (Melissa officinalis L.) on depression and anxiety in clinical trials: A systematic review and meta-analysis. Phytother Res. 2021;35(12):6690-6705.34449930

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.