Lemon balm supplement: what research suggests and how to choose
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- Lemon balm leaf capsules. Best for: Adults who want a simple single-herb product. See options on Amazon
- Lemon balm extract capsules. Best for: People who prefer a concentrated extract. See options on Amazon
- Valerian and lemon balm sleep blend. Best for: Adults whose main goal is sleep. See options on Amazon
What lemon balm is
Lemon balm, Melissa officinalis, is a traditional herbal remedy. A 2024 review in Nutrients lists compounds believed to underlie its effects, including rosmarinic acid, citral, oleanolic acid and ursolic acid. Animal and cell studies suggest lemon balm may act on several brain signaling systems, including GABA, cholinergic and serotonin pathways.
A 2025 narrative review in the International Journal of Molecular Sciences points to rosmarinic acid as one likely reason for its sleep effects.
What the research shows
| Use | What reviews report |
|---|---|
| Calm and anxiety | Promising; more robust trials needed |
| Mood | Antidepressant-like effects reported |
| Sleep | Improved with lemon balm plus valerian |
| Thinking and memory | Improved performance in some trials |
| Cholesterol | Lower total, LDL and triglycerides in 5 trials |
Calm and mood. The 2024 Nutrients review concludes lemon balm holds promise as a calming agent with anti-anxiety and antidepressant properties, while calling for more robust randomized trials.
Sleep. The 2025 review found a lemon balm and valerian combination significantly improved sleep quality in postmenopausal women, and lemon balm extract alone reduced sleep disorders in heart patients.
Thinking. In older adults with mild cognitive impairment or early Alzheimer's disease, extracts standardized to rosmarinic acid stabilized thinking and reduced agitation in studies the 2025 review describes. This is not a treatment for dementia.
Cholesterol. A 2024 meta-analysis in BMC Complementary Medicine and Therapies pooled 5 randomized trials with 302 patients and found significant decreases in total cholesterol, LDL and triglycerides, with no significant change in HDL.
Limits and safety
- Early evidence. Both reviews say more rigorous trials are needed. Many studies are small, and some tested lemon balm combined with other herbs.
- Not a replacement for treatment. Do not use lemon balm in place of care for anxiety, depression, sleep disorders, high cholesterol or memory problems.
- Pregnancy, nursing and medicines. Nature's Way advises consulting a health care professional before use if pregnant, nursing or taking any medications.
- Blends. Many stress and sleep products add other ingredients such as ashwagandha, GABA or melatonin, each with its own cautions.
Forms of lemon balm
- Leaf capsules. Nature's Way Melissa Lemon Balm Leaf gives 1.5 g of lemon balm leaf per 3-capsule serving, taken daily by adults, in plant-based capsules.
- Extract capsules. Concentrated extracts list a ratio or standardization; some studies used extracts standardized to rosmarinic acid.
- Tea. Lemon balm leaf is also brewed as a tea.
- Combination products. Lemon balm with valerian is the combination the 2025 review highlights for sleep in postmenopausal women.
How to choose a lemon balm supplement
- Melissa officinalis on the label. Confirm the species and plant part (leaf).
- Leaf vs extract. Leaf powder is simple; extracts that state rosmarinic acid content are closer to some studied products.
- Your goal. For sleep, the 2025 review highlights a valerian combination.
- Check blends. Read every ingredient in stress and sleep formulas.
- Start with label amounts and do not combine several calming products without asking a provider.
What to look for when you buy
Lemon balm leaf capsules
Best for: Adults who want a simple single-herb product
Nature's Way lists 1.5 g of lemon balm leaf per 3-capsule daily serving in plant-based capsules, with no gelatin.
Watch out: Evidence is still early. Ask a provider first if pregnant, nursing or taking medicine.
See options on AmazonLemon balm extract capsules
Best for: People who prefer a concentrated extract
Extracts concentrate lemon balm into fewer capsules, and some state rosmarinic acid content.
Watch out: Strength varies widely by brand; follow the label.
See options on AmazonValerian and lemon balm sleep blend
Best for: Adults whose main goal is sleep
The combination of lemon balm and valerian improved sleep quality in postmenopausal women in studies the 2025 review describes.
Watch out: Valerian adds drowsiness and should not be combined with alcohol or sedatives. Do not drive after taking it.
See options on AmazonQuestions people ask
- What is lemon balm supplement good for?
- It is mainly used for calm, mood and sleep. Reviews call the evidence promising but say more robust trials are needed.
- Does lemon balm help with sleep?
- Some studies suggest it may, especially combined with valerian. Lemon balm alone reduced sleep problems in one group of heart patients.
- Does lemon balm lower cholesterol?
- A 2024 meta-analysis of 5 trials found lower total cholesterol, LDL and triglycerides, but no change in HDL. It is not a substitute for prescribed treatment.
- When should I take lemon balm?
- Follow the label. Nature's Way directs adults to take 3 capsules daily; research has not set a best time.
- Is lemon balm safe?
- A 2024 meta-analysis described it as safe in the trials it pooled, but long-term data are limited. Check with a provider if pregnant, nursing or on medication.
- Can lemon balm help memory?
- Some trials found improved thinking and mood, and standardized extracts stabilized thinking in older adults with mild impairment. It is not a dementia treatment; see a doctor about memory changes.
- Is lemon balm compared with antidepressants?
- One study the 2025 review describes compared lemon balm with citalopram and found better quality of life, including sleep. Never stop or swap prescribed medicine without your doctor.
Sources
- Clinical Efficacy and Tolerability of Lemon Balm (Melissa officinalis L.) in Psychological Well-Being: A Review (pmc.ncbi.nlm.nih.gov), Nutrients (PMC11510126)
- Unraveling the Effects of Melissa officinalis L. on Cognition and Sleep Quality: A Narrative Review (pmc.ncbi.nlm.nih.gov), International Journal of Molecular Sciences (PMC12610505)
- Effects of Melissa officinalis (lemon balm) consumption on serum lipid profile: a meta-analysis of randomized controlled trials (pmc.ncbi.nlm.nih.gov), BMC Complementary Medicine and Therapies (PMC10996117)
- Melissa Lemon Balm Leaf (naturesway.com), Nature's Way