Lemon Balm - Herbal Monograph

September 1, 2026

Lemon Balm (Melissa officinalis) - Herbal Monograph

Common Name(s):

Lemon Balm
Balm
Melissa
Sweet Balm
Bee Balm (due to its appeal to bees)

Botanical Family:

Lamiaceae (Mint family)

Botanical Description:

Lemon balm (Melissa officinalis) is a perennial herb native to Europe, Western Asia, and the Mediterranean region, though it is now cultivated worldwide. It grows to a height of 30–90 cm (1–3 feet) and has square stems, as is typical of plants in the mint family. The leaves are oval, serrated, and bright green, with a distinctive lemon-scented aroma when crushed. In late spring to summer, lemon balm produces small, white or pale yellow flowers in clusters, which are highly attractive to bees.

Active Constituents:

Essential Oils: Particularly citral and geranial, which give the plant its lemon-scented aroma and contribute to its calming, antiviral, and antimicrobial properties.
Flavonoids: Such as luteolin and rosmarinic acid, which have antioxidant, anti-inflammatory, and neuroprotective effects.
Triterpenes: Including ursolic acid, which has been studied for its anti-inflammatory and antiviral effects.
Phenolic Acids: Antioxidant and anti-inflammatory properties.
Tannins: Contribute to the herb's mild astringent effects.

Medicinal Part:

Aerial Parts (leaves, flowers, and stems)

Therapeutic Uses:

Nervine & Relaxant: Lemon balm is widely recognized for its soothing effects on the nervous system. Effective for anxiety, nervous tension, stress, and as a sleep aid. Also shows mild cognitive-enhancing properties.
Digestive Support: Soothes digestive complaints including indigestion, bloating, nausea, and IBS. Antispasmodic properties relieve stomach cramps and gas.
Antiviral & Immune Support: Demonstrated antiviral activity against herpes simplex virus (HSV). Broad-spectrum antimicrobial activity against bacteria, fungi, and viruses.
Antioxidant & Anti-inflammatory: Flavonoids and phenolic acids protect cells from oxidative damage and reduce inflammation.
Thyroid Health: May have a mild inhibitory effect on thyroid function — beneficial in hyperthyroidism but avoid in hypothyroidism.
Topical Uses: Used in ointments or creams to soothe minor wounds, insect bites, burns, and cold sores.

Traditional and Historical Uses:

Lemon balm has been used since antiquity by the ancient Greeks and Romans for its calming, digestive, and anti-inflammatory properties. Dioscorides recommended it for soothing the nervous system and improving sleep.

Preparation and Dosage:

Infusion (Tea): Steep 1–2 teaspoons of dried lemon balm leaves in 1 cup of boiling water for 5–10 minutes. Drink 2–3 cups daily.
Tincture: 1–2 ml of a 1:5 tincture, 2–3 times daily.
Capsules/Tablets: 300–600 mg of dried extract, 1–2 capsules 1–3 times daily.
Topical Application: Apply lemon balm extract or cream directly to affected areas for cold sores or skin irritation.
Essential Oil: Used in aromatherapy to promote relaxation and improve sleep.

Contraindications and Cautions:

Pregnancy & Lactation: Generally considered safe in moderation. Consult a healthcare provider.
Thyroid Conditions: Use with caution if you have hyperthyroidism or are on thyroid medication.
Sedative Effects: May enhance the effects of sedative medications. Use caution with benzodiazepines, sleep aids, or alcohol.
Allergic Reactions: Rare. Discontinue if skin irritation or allergic symptoms occur.