Ingredient Guide

Lemon Balm Explained: The Calming Herb in the Mint Family

Lemon balm (Melissa officinalis) is a lemon-scented herb used for centuries to support calm. What it contains, what the human studies found, and how much is in our Lithium Orotate Supplement.

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Calm Support Mint Family Herb Non-Stimulant
In Our Products

Lemon Balm on the Label

Exactly how much lemon balm is in our product, straight from the label.

Synchronicity Health product containing Lemon Balm
Lithium Orotate SupplementPer serving of 2 capsules, with lithium 5 mg, reishi 600 mg, zinc 10 mg and vitamin B6 (P5P) 5 mg250 mg lemon balm 10:1 extract

How to use it (label directions): two capsules in the evening. Each bottle holds 30 servings. How this compares with research doses: human studies gave single doses of 300 to 1,600 mg of standardized lemon balm extracts. Our 250 mg is a 10:1 extract, made from about ten times its weight in dried leaf, so the amounts are not directly comparable. Use it as directed on the label.

Start Here

A Garden Herb for Calm

Lemon balm (Melissa officinalis) is a leafy herb in the mint family with a fresh lemon scent. It has been used in European and Middle Eastern herbal traditions for centuries, most often as a tea to support calm, relaxation and restful sleep.

Modern research has tested standardized lemon balm extracts in healthy adults and found measurable effects on calmness and mood after a single dose. We include 250 mg of a 10:1 lemon balm extract in our Lithium Orotate Supplement, an evening formula, alongside lithium orotate, reishi, zinc and vitamin B6 as P5P.

Tip: Lemon balm is the same plant used in many calming herbal teas. Supplements use concentrated extracts of the leaf.

How It Works

How Lemon Balm Works

Rosmarinic Acid and Other Compounds

Lemon balm leaves contain rosmarinic acid and other phenolic compounds, flavonoids, and a lemon-scented essential oil rich in citral. Rosmarinic acid is absorbed after lemon balm is taken by mouth and is thought to carry much of the effect.

GABA and Calm

Laboratory studies suggest compounds in lemon balm act on the GABA system, the brain's main calming messenger, including by slowing the enzyme that breaks GABA down. This fits the calmness seen in human studies, although the exact mechanism in people is not settled.

Acetylcholine Receptors

Some lemon balm extracts bind to acetylcholine receptors in the lab, and researchers have linked this to effects on memory and attention. Different extracts from the same plant behaved differently in human studies, which is why the preparation matters.

Lemon balm in the human studies In placebo-controlled studies with healthy adults, 300 mg sped up math under stress, 600 mg eased the mood effects of a laboratory stressor and improved accuracy of attention, and 1,600 mg of a different extract raised calmness and memory scores. The Lithium Orotate Supplement contains 250 mg of a 10:1 lemon balm extract per serving. Lemon balm in the human studies 300 MG Faster math under a laboratory stress test, no loss of accuracy 600 MG Calmer under stress; more accurate attention 1,600 MG A different extract: calmer, better memory scores LITHIUM OROTATE SUPPLEMENT, PER SERVING 250 mg lemon balm 10:1 extract, taken in the evening
What single doses of lemon balm did in human studies. Diagram by Synchronicity Health.
The Evidence

What Human Studies Found

Calm and Mood

In a placebo-controlled crossover study, 20 healthy young adults took single doses of 300, 600 and 900 mg of a standardized lemon balm extract. The lowest dose raised self-rated calmness early on, 600 mg improved accuracy of attention, and the highest dose lowered alertness. Some memory measures dipped at certain doses and times.

Stress

In a second study, 18 healthy volunteers took 300 mg, 600 mg or placebo before a demanding multitasking stress test. The 600 mg dose eased the negative mood effects of the test, with more calmness and less alertness, and 300 mg sped up math with no loss of accuracy.

Memory and Different Extracts

A third study screened lemon balm samples in the lab and chose one that bound acetylcholine receptors. At 1,600 mg, it improved calmness and memory scores in healthy young adults, while lower doses slowed some timed memory tasks. The authors noted that different preparations of the same plant can behave differently.

Lemon Balm in Food

Two further crossover studies gave lemon balm in a drink and in yoghurt to healthy young adults and found improvements in mood and some cognitive measures, with some trade-offs on other tasks.

The honest summary: lemon balm has good short-term evidence for calm in healthy adults, mostly from single-dose studies. Effects depend on the dose and the extract, and higher doses can reduce alertness, which suits evening use.

Compare

Lemon Balm vs Other Calming Ingredients

Lemon balm is one of several calming ingredients we use, each studied in a different way.

FeatureLemon balmL-theanineReishi
What it isMint-family leaf extractAmino acid from teaMedicinal mushroom
Main researchCalm and mood after single dosesRelaxed alertnessSleep and stress over weeks
Onset in studiesWithin hoursWithin an hourWeeks of daily use
In our productsLithium Orotate Supplement, 250 mgTheanine Nasal Spray, 36 mgForage and Lithium Orotate
How To Use It

Dosage, Timing, and Stacking

Amounts Used in Studies

Human studies used single doses of 300 to 1,600 mg of standardized extracts. Our Lithium Orotate Supplement provides 250 mg of a 10:1 extract per serving, so follow the label.

Timing

Because lemon balm can reduce alertness at higher doses, it suits the evening. The Lithium Orotate label says two capsules in the evening.

Stacking

Lemon balm is often paired with other calming ingredients such as L-theanine and reishi. For more on building a calmer evening, see our stress and mood guide.

Read This First

Safety and Side Effects

Lemon balm is generally well tolerated in studies. The main effect to plan around is reduced alertness at higher doses.

Points Worth Knowing

  • Sedatives and alcohol: lemon balm may add to the effects of sleep medications, sedatives, alcohol and other calming herbs.
  • Thyroid: laboratory studies suggest lemon balm extracts may interfere with thyroid hormone signaling, so people taking thyroid medication should check with a clinician.
  • Driving: see how it affects you before driving or operating machinery.

Who should be cautious: speak with a qualified healthcare professional before using lemon balm if you are pregnant or nursing, take thyroid, sedative or sleep medication, are scheduled for surgery, or take any other regular medication.

In Short

Key Takeaways

  • Lemon balm (Melissa officinalis) is a mint-family herb traditionally used for calm and restful sleep.
  • In healthy adults, single doses raised calmness and 600 mg eased the mood effects of a laboratory stressor.
  • Effects depend on the dose and the extract; higher doses can reduce alertness.
  • Our Lithium Orotate Supplement contains 250 mg of a 10:1 extract, taken in the evening.
  • Check with a clinician if you take thyroid, sedative or sleep medication.
The Bottom Line

Calm, From the Garden.

Lemon balm is a gentle, well studied herb for calm. In an evening formula, it helps set the tone for winding down, alongside the basics of a steady sleep routine.

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Frequently Asked

Lemon Balm FAQ

What is lemon balm good for?

Lemon balm (Melissa officinalis) is traditionally used to support calm, relaxation and restful sleep. In placebo-controlled studies with healthy adults, single doses raised self-rated calmness, and 600 mg eased the negative mood effects of a laboratory stress test. Effects depend on the dose and the extract.

What are the side effects of lemon balm?

Lemon balm is generally well tolerated. Higher doses can make people feel less alert or drowsy, so see how it affects you before driving. Occasional reports include mild stomach upset or headache.

Does lemon balm make you sleepy?

It can make you feel calmer and, at higher doses, less alert. That is one reason it suits an evening routine, and why our Lithium Orotate Supplement, which contains lemon balm, is taken in the evening.

Can I take lemon balm with other calming supplements?

Lemon balm may add to the effects of sedatives, sleep medications, alcohol and other calming herbs. Check with a clinician before combining it with prescription sedatives or sleep aids.

Is lemon balm or ashwagandha better?

They are different plants with different research. Lemon balm is a mint-family herb studied mainly for short-term calm and mood; ashwagandha is an adaptogenic root studied over weeks. We use lemon balm, not ashwagandha, in our products.

How much lemon balm is in the Lithium Orotate Supplement?

Each 2-capsule serving contains 250 mg of a 10:1 lemon balm extract, alongside lithium 5 mg, reishi 600 mg, zinc 10 mg and vitamin B6 as P5P 5 mg. Trials used single doses of 300 to 1,600 mg of different standardized extracts, so the amounts are not directly comparable.

References

Sources

  1. Kennedy DO, et al. Modulation of mood and cognitive performance following acute administration of Melissa officinalis (lemon balm). Pharmacology Biochemistry and Behavior, 2002. PubMed 12062586
  2. Kennedy DO, 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. PubMed 12888775
  3. Kennedy DO, et al. Attenuation of laboratory-induced stress in humans after acute administration of Melissa officinalis (Lemon Balm). Psychosomatic Medicine, 2004. PubMed 15272110
  4. Scholey A, et al. Anti-stress effects of lemon balm-containing foods. Nutrients, 2014. PubMed 25360512
  5. Shakeri A, et al. Melissa officinalis L.: a review of its traditional uses, phytochemistry and pharmacology. Journal of Ethnopharmacology, 2016. PubMed 27167460

These statements have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease. Nothing here is medical advice. If you are pregnant, nursing, taking medication (especially thyroid, sedative or sleep medication), or managing a health condition, consult a qualified healthcare professional before use.