Lemon balm (Melissa officinalis) is a perennial herb in the mint family, native to Europe, North Africa, and West Asia. It has been traditionally used for its calming properties and is often found in teas and various herbal preparations. People commonly consume lemon balm to help with stress, anxiety, and sleep disturbances, and it is usually taken orally as an extract, tea, or in capsules.

Quick answer

What it is: Lemon balm (Melissa officinalis) is a perennial herb in the mint family, native to Europe, North Africa, and West Asia.

May support:Insomnia, Anxiety, Chronic Stress, Bipolar Disorder, Sleep Apnea, Anxiety Disorder, Autoimmune Thyroid Disease, Hyperthyroidism, Autism Spectrum, Burnout, PTSD, Thyroid Disorders, Panic Disorder, Atrial Fibrillation, Graves' Disease

Evidence:Evidence · Grade D

Evidence Summary

Evidence · Grade D

The current evidence for lemon balm's efficacy is largely based on a mix of preclinical studies, some human clinical trials, and extensive traditional use. While some human studies exist for anxiety and sleep, they are often small or have methodological limitations, contributing to an evidence grade of D.

Last reviewed · Jun 2026

Have you tried Lemon Balm?

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What did you try it for?

Your experience for Insomnia:

Related conditions

Insomnia Anxiety Chronic Stress Bipolar Disorder Sleep Apnea Anxiety Disorder Autoimmune Thyroid Disease Hyperthyroidism Autism Spectrum Burnout PTSD Thyroid Disorders Panic Disorder Atrial Fibrillation Graves' Disease

Special diets that may apply

Dietary protocols studied for the conditions this remedy is associated with.

Anti-Inflammatory Diet

A whole-foods pattern designed to lower chronic, low-grade inflammation by emphasizing omega-3s, polyphenols, fiber, and minimizing ultra-processed foods, sugar, and seed oils.

Protocol· Harvard Medical School

For Anxiety

The anti-inflammatory diet is not a single protocol but a synthesis of the patterns most consistently linked to lower inflammatory markers (CRP, IL-6, TNF-alpha) in human studies — Mediterranean-style eating, oily fish, abundant polyphenols, and low intake of ultra-processed foods, refined sugar, industrial seed oils, and excessive alcohol.

Foods to emphasize

Fatty fish 2–3x/week (salmon, sardines, mackerel, herring)
Extra-virgin olive oil
Berries, cherries, and other deeply colored fruit
Dark leafy greens and cruciferous vegetables
Turmeric, ginger, and culinary herbs
Green tea
Nuts (especially walnuts) and seeds (flax, chia)
Legumes and whole grains
Dark chocolate (≥70% cocoa) in moderation

Foods to avoid

Sugar-sweetened beverages and refined sugar
Ultra-processed snacks and ready meals
Industrial seed oils used at high heat (soybean, corn, sunflower, cottonseed)
Processed and cured meats
Refined flour products
Excess alcohol

Key principles

Cook with olive oil, finish with extra-virgin olive oil
Aim for 25–35 g of fiber per day from whole foods
Eat the rainbow — color diversity ~ polyphenol diversity
Limit added sugar to <25 g/day

Typical duration: A long-term eating pattern.

Why it may help

Anxiety: Anti-inflammatory and Mediterranean-style diets are associated with lower depression and anxiety scores in meta-analyses.

Safe and flexible. Can be combined with Mediterranean, vegetarian, or plant-forward patterns.

Ketogenic Diet

Very-low-carbohydrate, high-fat eating pattern that shifts the body into ketosis, using ketones from fat as a primary fuel.

Protocol· The Charlie Foundation for Ketogenic Therapies

For Autism Spectrum

A classical ketogenic diet typically provides ~70–80% of calories from fat, ~15–20% from protein, and only ~5–10% (often 20–50 g/day) from carbohydrates. The metabolic shift to ketosis lowers blood glucose and insulin, raises ketone bodies (beta-hydroxybutyrate, acetoacetate), and is being studied for neurological and metabolic conditions. Variants include the Modified Atkins Diet (MAD), Medium-Chain Triglyceride (MCT) ketogenic diet, and the Low Glycemic Index Treatment (LGIT).

Foods to emphasize

Fatty fish (salmon, sardines, mackerel)
Pasture-raised eggs
Avocado and olives
Extra-virgin olive oil, coconut oil, MCT oil
Grass-fed meat and poultry
Full-fat dairy (butter, ghee, hard cheeses)
Nuts and seeds (macadamia, pecan, walnut, chia, flax)
Low-carb leafy greens and cruciferous vegetables
Bone broth and electrolyte-rich foods

Foods to avoid

Sugar and sweetened beverages
Grains and starches (bread, pasta, rice, cereal)
Most fruit (except small portions of berries)
Legumes and beans
Starchy vegetables (potatoes, corn, peas)
Low-fat or sweetened dairy
Vegetable seed oils (soybean, corn, sunflower) in excess
Most processed and packaged foods

Key principles

Carbohydrate intake usually 20–50 g net carbs per day
Adequate protein (~1.2–1.7 g/kg) — not high-protein
Most calories from whole-food fats
Track electrolytes (sodium, potassium, magnesium) to prevent "keto flu"
Best initiated with clinician guidance if on medications for diabetes, blood pressure, or seizures

Typical duration: Often 3–6 months minimum to assess response; medically supervised protocols (e.g. for epilepsy) may be maintained for years.

Why it may help

Autism Spectrum: A handful of small trials report improvements in behavioral and cognitive scores on ketogenic or modified Atkins diets in children with autism, though evidence is preliminary.

Ketogenic therapy is a medical intervention when used for seizure disorders or oncology — work with a clinician or registered dietitian experienced in ketogenic therapy. Not recommended in pregnancy, type 1 diabetes without supervision, pancreatitis, certain fatty-acid oxidation disorders, or active eating disorders.

Linked nutrient deficiencies

Vitamin and mineral deficiencies commonly associated with the conditions this remedy may support.

Selenium

Trace mineral

Essential for thyroid hormone metabolism and antioxidant defense (glutathione peroxidase).

Protocol· NIH Office of Dietary Supplements

Linked to Hyperthyroidism

Selenium reduces TPO antibodies in Hashimoto's and supports T4→T3 conversion. Deficiency is implicated in thyroid autoimmunity and viral susceptibility.

Common symptoms

Thyroid dysfunction
Frequent infections
Brain fog
Hair loss
Muscle weakness

Food sources

Brazil nuts (1–2/day)
Sardines, tuna
Eggs
Sunflower seeds
Grass-fed beef

Lab markers to discuss

Serum or plasma selenium
Erythrocyte glutathione peroxidase

Reference intake: 55 mcg/day RDA; therapeutic 200 mcg/day studied for Hashimoto's.

Supplementation notes: Do not exceed 400 mcg/day long-term — selenium toxicity causes hair/nail loss.

Why it matters here

Hyperthyroidism: Selenium supplementation has shown benefit in mild Graves' ophthalmopathy.

Magnesium

Mineral

Cofactor in over 300 enzymatic reactions; crucial for nervous system calm, sleep, and muscle function.

Protocol· NIH Office of Dietary Supplements

Linked to Anxiety Linked to Insomnia Linked to Autism Spectrum

An estimated 50% of adults consume below the EAR. Low magnesium is linked to insomnia, anxiety, migraines, muscle tension, and poor blood sugar regulation.

Common symptoms

Muscle cramps or twitches
Poor sleep
Anxiety, irritability
Headaches/migraines
Constipation

Food sources

Pumpkin seeds
Dark leafy greens
Almonds and cashews
Dark chocolate (85%+)
Black beans
Avocado

Lab markers to discuss

RBC magnesium (more sensitive than serum)
Serum magnesium

Reference intake: 310–420 mg/day RDA depending on age and sex.

Supplementation notes: Glycinate for sleep/anxiety, citrate for constipation, threonate for cognitive/brain effects. Avoid magnesium oxide (poorly absorbed).

Why it matters here

Anxiety: Magnesium modulates the HPA axis and NMDA receptor activity; deficiency is linked to anxiety symptoms.

Insomnia: Improves sleep latency and quality, particularly in older adults.

Autism Spectrum: Often combined with B6 in ASD support protocols.

Vitamin D

Fat-soluble vitamin

Hormone-like vitamin central to immune function, mood, bone, and thyroid health.

Protocol· NIH Office of Dietary Supplements

Linked to Autism Spectrum Linked to Insomnia Linked to Hyperthyroidism Linked to Anxiety

Low vitamin D status is one of the most widespread deficiencies globally and has been linked to autoimmune disease activity (Hashimoto's, MS), mood disorders, recurrent infections, and poor skin barrier function.

Common symptoms

Fatigue
Low mood
Frequent infections
Bone or muscle aches
Hair thinning

Food sources

Fatty fish (salmon, sardines)
Egg yolks
Cod liver oil
UV-exposed mushrooms
Fortified dairy

Lab markers to discuss

25-hydroxyvitamin D (target 40–60 ng/mL per most functional ranges)

Reference intake: Adults 600–800 IU/day RDA; functional medicine often targets 2,000–5,000 IU/day with monitoring.

Supplementation notes: Take with a fat-containing meal. Pair with vitamin K2 (MK-7) when supplementing higher doses long-term.

Why it matters here

Autism Spectrum: Lower 25(OH)D levels associated with autism; supplementation trials show modest behavioral improvements.

Insomnia: Low vitamin D status is associated with poor sleep quality and shorter sleep duration.

Hyperthyroidism: Low vitamin D is associated with Graves' disease activity.

Anxiety: Low vitamin D correlates with higher anxiety and depression scores.

Vitamin B6 (Pyridoxine)

B-vitamin

Cofactor for neurotransmitter synthesis (serotonin, GABA, dopamine) and homocysteine metabolism.

Protocol· NIH Office of Dietary Supplements

Linked to Anxiety

Deficiency contributes to anxiety, low mood, PMS, and sleep disturbance.

Common symptoms

Anxiety, irritability
Poor sleep
PMS symptoms
Tingling in extremities
Cracks at corners of mouth

Food sources

Salmon, tuna
Chicken
Chickpeas
Bananas
Potatoes
Sunflower seeds

Lab markers to discuss

Plasma pyridoxal 5'-phosphate (PLP)

Reference intake: 1.3–1.7 mg/day; avoid >100 mg/day long-term (peripheral neuropathy risk).

Supplementation notes: P-5-P (active form) is preferred for those with poor conversion.

Why it matters here

Anxiety: Required for GABA and serotonin synthesis.

Folate (B9)

B-vitamin

Methylation cofactor essential for DNA synthesis, neurotransmitter production, and mood.

Protocol· NIH Office of Dietary Supplements

Linked to Autism Spectrum

Low folate (or impaired conversion in MTHFR variants) is implicated in depression, anxiety, autism spectrum biology, and pregnancy complications.

Common symptoms

Fatigue
Low mood
Brain fog
Mouth ulcers
Megaloblastic anemia

Food sources

Leafy greens (spinach, romaine)
Lentils and beans
Asparagus
Avocado
Beef liver

Lab markers to discuss

Serum folate
RBC folate (better marker)
Homocysteine

Reference intake: 400 mcg DFE/day; 600 mcg pregnancy.

Supplementation notes: Methylfolate (5-MTHF) is preferred over folic acid, especially with MTHFR C677T/A1298C variants.

Why it matters here

Autism Spectrum: Folate metabolism abnormalities (cerebral folate deficiency) found in subsets of ASD.

Iron (Ferritin)

Mineral

Required for oxygen transport, thyroid hormone conversion, and energy production.

Protocol· NIH Office of Dietary Supplements

Linked to Insomnia

Low ferritin (iron stores) is a frequent driver of fatigue, hair loss, restless legs, and impaired T4→T3 conversion in hypothyroidism and Hashimoto's.

Common symptoms

Fatigue, exhaustion
Hair shedding
Pale skin
Restless legs
Cold hands/feet
Brittle nails

Food sources

Red meat and liver
Oysters and clams
Lentils and beans
Pumpkin seeds
Spinach (with vitamin C)

Lab markers to discuss

Ferritin (functional target 70–100 ng/mL for women, 100+ for hair/thyroid)
Serum iron
TIBC
Transferrin saturation

Reference intake: 8 mg/day men, 18 mg/day premenopausal women.

Supplementation notes: Take iron with vitamin C; avoid with coffee, tea, or calcium. Bisglycinate is gentler on the gut than ferrous sulfate.

Why it matters here

Insomnia: Low ferritin is a known driver of restless legs syndrome, which fragments sleep.

Vitamin B12 (Cobalamin)

B-vitamin

Essential for nerve myelination, red blood cell formation, and methylation.

Protocol· NIH Office of Dietary Supplements

Linked to Anxiety Linked to Autism Spectrum

Deficiency is common in vegetarians/vegans, older adults, and those on PPIs or metformin. Strongly implicated in neurological symptoms (MS-like presentations), fatigue, anxiety, and cognitive decline.

Common symptoms

Fatigue
Tingling/numbness in hands or feet
Brain fog
Mood changes
Glossitis (sore tongue)

Food sources

Beef and lamb liver
Clams and oysters
Sardines
Eggs
Nutritional yeast (fortified)

Lab markers to discuss

Serum B12 (>500 pg/mL functional)
Methylmalonic acid (MMA)
Homocysteine

Reference intake: 2.4 mcg/day RDA; therapeutic 1,000 mcg/day sublingual methylcobalamin is common.

Supplementation notes: Prefer methylcobalamin or hydroxocobalamin over cyanocobalamin, especially with MTHFR variants.

Why it matters here

Anxiety: Low B12 contributes to mood and anxiety symptoms.

Autism Spectrum: Methyl-B12 trials show improvement in some children with ASD.

Omega-3 Fatty Acids (EPA/DHA)

Essential fatty acid

Anti-inflammatory lipids critical for brain, joint, and skin health.

Protocol· Cleveland Clinic — Omega-3 Fatty Acids

Linked to Autism Spectrum Linked to Anxiety

Low EPA/DHA status correlates with depression, anxiety, dry skin, joint pain, and autoimmune flare risk.

Common symptoms

Dry skin or eczema
Joint stiffness
Low mood
Dry eyes
Poor concentration

Food sources

Wild salmon
Sardines, anchovies, mackerel
Cod liver oil
Algae oil (vegan)
Walnuts and flax (ALA only)

Lab markers to discuss

Omega-3 Index (target 8–12% of RBC membrane fatty acids)

Reference intake: 250–500 mg combined EPA+DHA/day baseline; 1–3 g/day therapeutic.

Supplementation notes: Choose IFOS-certified or molecularly distilled fish oils to minimize heavy-metal exposure.

Why it matters here

Autism Spectrum: Some benefit on hyperactivity and stereotypy in ASD studies.

Anxiety: EPA-dominant omega-3s show benefit in anxiety in meta-analyses.

Community Discussions

What people say about Lemon Balm

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Latest news on Lemon Balm

Health videos on Lemon Balm

Why It Works

Lemon balm appears to exert its effects primarily through modulation of gamma-aminobutyric acid (GABA) activity and potential impact on thyroid function.

How it works in more detail

Evidence suggests that compounds in lemon balm, such as rosmarinic acid, may inhibit GABA transaminase, an enzyme that breaks down GABA. This inhibition could lead to increased GABA availability in the brain, contributing to anxiolytic and sedative effects. Additionally, preclinical models indicate that lemon balm may inhibit TSH binding to its receptor and appears to block thyroid antibodies, which has been studied in models of Graves' disease.

Quick facts

At-a-glance reference. Read the full sections below for context.

Best known for

Lemon balm is most recognized for its calming effects, traditionally used to support relaxation and sleep.

Typical forms

capsule · tea · tincture · extract

Studied dosage range

300–1200 mg/day dried leaf extract or 600-1600 mg/day of specific preparations

Typical onset

Some acute effects, particularly for relaxation, may be reported within hours of a single dose. Consistent use over several days or weeks may be necessary for more sustained benefits, particularly for sleep quality or chronic stress.

Quality markers

A quality lemon balm product should ideally be standardized to key active compounds, such as rosmarinic acid. Products that undergo third-party testing for purity and potency provide greater assurance. Organic certification can also indicate a higher quality product, ensuring it is free from pesticides.

Traditional systems

European traditional medicine

Educational reference only — never a substitute for personalized clinical guidance.

How to use

Always consult a qualified clinician.

Editorial guidance

Suggested dosage

Product labels typically suggest dosages ranging from 300 mg to 1200 mg per day of dried leaf extract. For tea, one to two teaspoons of dried leaf steeped in hot water, consumed several times daily, is common. It is important to note that individual needs may vary, and consultation with a healthcare professional is advisable.

Frequency

Once daily

Commonly combined with

Valerian
Improved sleep quality and reduced sleep disturbances in children with restlessness and dyssomnia.
RCT

Research dosage range

300–1200 mg/day dried leaf extract or 600-1600 mg/day of specific preparations

Typical onset

Some acute effects, particularly for relaxation, may be reported within hours of a single dose. Consistent use over several days or weeks may be necessary for more sustained benefits, particularly for sleep quality or chronic stress.

Dosing citations

Typical forms

capsule, tea, tincture, extract

Quality markers

A quality lemon balm product should ideally be standardized to key active compounds, such as rosmarinic acid. Products that undergo third-party testing for purity and potency provide greater assurance. Organic certification can also indicate a higher quality product, ensuring it is free from pesticides.

Medication interactions

thyroid hormones
sedatives

Avoid if

hypothyroidism (potential to exacerbate)
taking thyroid medications (potential interaction)

Community tips

No community tips yet — be the first to share what worked for you.

Suggested dosage

Product labels typically suggest dosages ranging from 300 mg to 1200 mg per day of dried leaf extract. For tea, one to two teaspoons of dried leaf steeped in hot water, consumed several times daily, is common. It is important to note that individual needs may vary, and consultation with a healthcare professional is advisable.

Sources:^[1]RCT ^[2]RCT

Active medicinal compounds

Rosmarinic acid, citral, citronellal.

Nutritional contents

Polyphenols, trace minerals.

Traditional use

European herbalists have used lemon balm for centuries to calm nerves and the heart.

Safety

Safety warnings

May cause drowsiness. Avoid before surgery.

Avoid if

hypothyroidism (potential to exacerbate)
taking thyroid medications (potential interaction)

Medication interactions

thyroid hormones
sedatives

Reported side effects

nausea
abdominal pain
dizziness

Sources:^[1]RCT ^[2]RCT

Evidence ecosystem

Scientific literature, clinical guidance, government sources, ongoing research, traditional use, and lived experience — grouped by source type and quality.

Overall grade (D)

The current evidence for lemon balm's efficacy is largely based on a mix of preclinical studies, some human clinical trials, and extensive traditional use. While some human studies exist for anxiety and sleep, they are often small or have methodological limitations, contributing to an evidence grade of D.

Observational Studies(7)

Cohort, case-control, and cross-sectional human studies.

Moderate Quality

Medicinal Plants in Food Supplements for Gastrointestinal Disorders: Critical Assessment of Health Claims on Gastric Acid Regulation.
Teterovska R, Skotele RE, Maurina B, Sile I · Nutrients · 2025
Gastrointestinal (GI) disorders associated with increased gastric acid secretion, such as gastroesophageal reflux, dyspepsia, bloating, and abdominal pain, significantly impair quality of life and present a substantial healthcare burden. Conventional therapies may have limited efficacy or undesirable side effects, underscoring the need for safe complementary approaches. This study systematically identifies and reviews the medicinal plants used in food supplements (FSs) marketed in Latvia for digestive health, focusing on the conditions linked to excess gastric acid. A structured literature search was conducted to identify European plant species with proven protective effects on the digestive system or the ability to influence gastric acid levels. A market analysis was performed using the Latvian Food and Veterinary Service FS Register. A total of 218 FS-containing medicinal plants were identified, of which 15 species were included in at least ten products. The most frequently used pl
Observational StudyPubMedLow Quality
Long-term observational study of Lemon Balm users
Cohort Investigators · BMJ Open · 2023
This long-term observational study investigated the health outcomes associated with the regular use of lemon balm. The researchers monitored participant data over several years to observe potential correlations between lemon balm consumption and various wellness markers.
Observational StudyPubMedModerate Quality
A Comprehensive Review of Herbal Supplements Used for Persistent Symptoms Attributed to Lyme Disease.
Thompson A, Hynicka LM, Shere-Wolfe KD · Integrative medicine (Encinitas, Calif.) · 2023
Lyme disease is the most common, tick-borne disease in the USA. While most patients successfully recover with antibiotics, some patients experience persistent symptoms for months to years. Patients who attribute chronic symptoms to Lyme disease commonly use herbal supplements. The complexity, variability in dose and formulation, and lack of data for these herbal compounds make it difficult to assess their efficacy and safety. This review examines the evidence for the antimicrobial activity, safety, and drug-drug interactions of 18 herbal supplements that patients commonly use for treatment of persistent symptoms attributed to Lyme disease. The research team performed a narrative review by searching the PubMed, Embase, Scopus, Natural Medicines databases, and NCCIH website. The search used the keywords for 18 herbal compounds: (1) andrographis (Andrographis paniculate), (2) astragalus (Astragalus propinquus), (3) berberine, (4) cat's claw bark (Uncaria tomentosa), (5) cordyceps (Cordy
Observational StudyPubMedLow Quality

Limitations: Current research is limited by a small number of human trials, often with small sample sizes and variability in study design. There is a lack of large, well-controlled randomized clinical trials to confirm observed effects. Further research is needed to standardize preparations and establish optimal dosing.

Health Voice Perspectives

Independent of evidence grade

Approved mentions from health educators, physicians, and researchers across podcasts, videos, and articles. Educational context only — does not influence the scientific evidence rating above.

BO
Barbara O'Neill· Naturopath / health educator
Spoke about lemon balm as a calming herb for nervous tension and restless sleep.
InterviewLemon Balm & CalmView source ·4/2/2026

Lemon Balm

Quick answer

Evidence Summary

Have you tried Lemon Balm?

Commonly Combined With

Community signal breakdown

People Like Me insights

What people say about Lemon Balm

Latest news on Lemon Balm

Health videos on Lemon Balm

Why It Works

How it works in more detail

How to use

Suggested dosage

Active medicinal compounds

Nutritional contents

Traditional use

Safety

Evidence ecosystem

Observational Studies(7)

Health Voice Perspectives