Melissa officinalis.  Lemon balm, Sweet balm, Bee balm  Family: Labiatae        
Used very widely as an ingredient of herbal teas.
PART USED: Leaves
TASTE and ODOR: Lemony
ACTIONS
GROUP: Herbs for the mind and emotions- Cephalics
1. Sedative nervine.[1,2,3,5] Sedative, benefiting the Heart.[5]
2. Diaphoretic.[1] Febrifuge.[1,2,3]
3. Carminative.[1,2,3] Relieving spasm.[5]
4. Cordial.
5. Thymoleptic.
6. Antispasmodic.[1]
7. Anti-Viral.
SPECIFIC INDICATIONS: Dyspepsia associated with anxiety or depressive states.[1] Nervous stomach disorders.[5]
COMBINATIONS
INDICATIONS- Used very widely as an ingredient of herbal teas.
1. Nervous/Emotional- Nervous tachycardia. Digestive disorders such as indigestion especially if associated with anxiety or depression. Anxiety,[1] insomnia[5] nightmares. To improve concentration, memory and understanding. Nervous dyspepsia.[5]
2. Depression, "it causeth the Heart and mind to become merry and driveth away all troublesome cares and thoughts." Depressive illness.[1]
3. Flatulent[5] dyspepsia.[1] Relieves flatulence less strongly than Chamomile, or Peppermint.[5]
3. Uterine disorders generally including delayed or painful periods.
4. Fevers generally.
5. To promote longevity.
External-  A cream containing extracts of Lemon Balm is used for the treatment of cutaneous lesions of  Herpes Simplex virus.[3]
PREPARATIONS:  3X /day
Dried leaves  2-4 g.[1] Infusion 1:20,[1,2] two teaspoons to a cup of water, not boiled. Leave to stand, covered, for ten to fifteen minutes, then sip while hot, sweetening with honey if desired.[5]
Fluid extract  1:1 in 45% alcohol[4]  2-4 ml.[1,2] 2-6 ml.[3]
Tincture 1:5 in 45%  2-6 ml.[1,2]
Spirit of Melissa 75% alcohol.[3] Used for external used, for neuralgia, headaches, migrain, and on the temples at night in cases of sleeplessness.[5]


DESCRIPTION: A perennial herb up to 60 cm tall, widely cultivated. Small whitish flowers in spring. Leaves opposite, stalked, about 3-4 cm long, ovate, wrinkled with a coarsely serrate margin and a rounded base.
References
Inner Path can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

Constituents

Research
The volatile oils contained in the spirits of Melissa act in the fist instance on the limbic part of the brain. This governs the autonomic functions and protects the cerebrum, the main part of the brain, from excessively powerful stimuli from the periphery of the body.[1]
References
[1] Weiss, Rudolf Fritz Herbal Medicine Translated from the Sixth German Edition of Lehrbuch der Phytotherapie by A. R. Meuss. (1988) ISBN 0-906584-19-1 British Library Calaloguing in Publication Data Beaconsfield publishers Ltd, Beaconfield, England.

Anxiolytic and antidepressant-like effects of Melissa officinalis (lemon balm) extract in rats: Influence of administration and gender
Adefunmilayo E. Taiwo, Franco B. Leite, Greice M. Lucena, Marilia Barros, Dâmaris Silveira, Mônica V. Silva, and Vania M. Ferreira
Abstract
To analyse the behavioral effects of Melissa officinalis extract in rats following acute or subacute treatment.
Materials and Methods:
The behavioral effects of an acute or subacute (10-day course) orally administered M. officinalis (MO; 0, 30, 100 or 300 mg/kg) ethanol extract were evaluated in male and female Wistar rats in elevated plus-maze (EPM), forced swimming (FS) and open field (OF) tests. The effects of diazepam (DZP; 1 mg/kg) and fluoxetine (FXT; 10 mg/kg) were also assessed.
Results:
In the EPM test, the percentage of open arm entries and open arm times of both males and females given the subacute M. officinalis ethanol extract were significantly higher than those of the vehicle-treated animals but were at levels similar to those observed in the DZP group, regardless of the treatment length. In the FS test, immobility duration was significantly lower in both males and females treated with the plant extract when compared to vehicle-treated counterparts. A 10-day treatment with FXT induced the same antidepressant response, regardless of gender, and was more effective than the M. officinalis extract. Male and female rats demonstrated distinct gender profiles, and treatment × gender interactions were observed. Locomotion in the EPM and OF tests was not significantly altered by treatments.
Conclusion:
The potential psychoactive properties of M. officinalis may provide a unique pharmacological alternative for certain psychiatric disorders; however, the efficacy appears to be dependent on both gender and administration length.
Indian J Pharmacol. 2012 Mar-Apr; 44(2): 189–192. doi: 10.4103/0253-7613.93846 PMCID: PMC3326910 ncbi.nlm.nih.gov Modulation of mood and cognitive performance following acute administration of Melissa officinalis (lemon balm).
Kennedy DO, Scholey AB, Tildesley NT, Perry EK, Wesnes KA.
Abstract
Melissa officinalis (lemon balm) is a traditional herbal medicine, which enjoys contemporary usage as a mild sedative, spasmolytic and antibacterial agent. It has been suggested, in light of in vitro cholinergic binding properties, that Melissa extracts may effectively ameliorate the cognitive deficits associated with Alzheimer's disease. To date, no study has investigated the effects on cognition and mood of administration of Melissa to healthy humans. The present randomised, placebo-controlled, double-blind, balanced-crossover study investigated the acute effects on cognition and mood of a standardised extract of M. officinalis. Twenty healthy, young participants received single doses of 300, 600 and 900 mg of M. officinalis (Pharmaton) or a matching placebo at 7-day intervals. Cognitive performance was assessed using the Cognitive Drug Research (CDR) computerised test battery and two serial subtraction tasks immediately prior to dosing and at 1, 2.5, 4 and 6 h thereafter. In vitro IC(50) concentrations for the displacement of [3H]-(N)-nicotine and [3H]-(N)-scopolamine from nicotinic and muscarinic receptors in human occipital cortex tissue were also calculated. Results, utilising the cognitive factors previously derived from the CDR battery, included a sustained improvement in Accuracy of Attention following 600 mg of Melissa and time- and dose-specific reductions in both Secondary Memory and Working Memory factors. Self-rated "calmness," as assessed by Bond-Lader mood scales, was elevated at the earliest time points by the lowest dose, whilst "alertness" was significantly reduced at all time points following the highest dose. Both nicotinic and muscarinic binding were found to be low in comparison to the levels found in previous studies.
PMID: 12062586 Pharmacol Biochem Behav. 2002 Jul;72(4):953-64. ncbi.nlm.nih.gov

The effects of Melissa officinalis (lemon balm) pretreatment on the resistance of the heart to myocardial injury.
Joukar S, Asadipour H1, Sheibani M, Najafipour H, Dabiri S.
Abstract
CONTEXT:
The antihyperlipidemic, antiarrhythmic, neuroprotective and hepatoprotective effects of Melissa officinalis L. (Lamiaceae) have been reported. However, no study has examined its effects on the resistance of the heart to stressful conditions.
OBJECTIVE:
The objective of this study is to evaluate the effects of aqueous extract of M. officinalis aerial parts on Wistar rat heart with/without cardiac injury.
MATERIALS AND METHODS:
Animals were grouped as control, isoproterenol (ISO), M. officinalis without (M50, M100, and M200) and with isoproterenol (M50+ISO, M100+ISO, and M200+ISO). The aqueous extract of M. officinalis was orally administered at dosages of 50, 100, and 200 mg/kg/d, respectively, for 7 consecutive days. On the 6th and 7th day, ISO, M50+ISO, M100+ISO, and M200+ISO groups received 85 mg/kg of isoproterenol for myocardial injury induction. On day 8, hemodynamic parameters were recorded and samplings were done.
RESULTS:
The extract (50, 100, and 200 mg/kg) significantly reduced the heart rate (264±5, 259±5 and 281±3 versus 377±13 in control group, p<0.01). Blood pressure was significantly decreased in M50+ISO (75±5) versus M50 (110±6) and M100+ISO (72±6) versus M100 (105±5 mmHg, p<0.01). The malondialdehyde levels of the injured hearts were lower in M50+ISO and M100+ISO groups than in the ISO group (p<0.05). Serum cardiac troponin I was higher in the M200+ISO group (5.1±1.7) than in the ISO group (2.7±0.7ng/ml, p<0.05).
CONCLUSION:
The lower dose of extract, by improving the balance of the redox system and by reducing the heart rate, may increase the heart resistance to injury. However, the higher doses of extract may intensify the injury of ischemic heart.
PMID: 26457827 DOI: 10.3109/13880209.2015.1091845 Pharm Biol. 2016;54(6):1005-13. doi: 10.3109/13880209.2015.1091845. Epub 2015 Oct 12. ncbi.nlm.nih.gov

Inhibitory activity of Melissa officinalis L. extract on Herpes simplex virus type 2 replication.
Mazzanti G, Battinelli L, Pompeo C, Serrilli AM, Rossi R, Sauzullo I, Mengoni F, Vullo V.
Abstract
Melissa officinalis L. (Lamiaceae) (lemon balm) is used in folk medicine for nervous complaints, lower abdominal disorders and, more recently, for treating Herpes simplex lesions. In this work the antiviral activity of a hydroalcoholic extract of lemon balm leaves against the Herpes simplex virus type 2 (HSV-2) was assessed by the cytopathic effect inhibition assay on Vero cells (ATCC CCL-81), in comparison with acyclovir. The cytotoxicity of the extract on Vero cells was previously tested by evaluating the cellular death and was confirmed by the Trypan blue test. Lemon balm showed to reduce the cytopathic effect of HSV-2 on Vero cells, in the range of non-toxic concentrations of 0.025-1 mg mL(-1) (with reference to the starting crude herbal material). The maximum inhibiting effect (60%) was obtained with 0.5 mg mL(-1). The viral binding assay showed that the extract does not prevent the entry of HSV-2 in the cells, thus suggesting a mechanism of action subsequent to the penetration of the virus in the cell. The extract was also chemically characterised by NMR and HPLC analysis; it showed to contain cinnamic acid-like compounds, mainly rosmarinic acid (4.1% w/w). Our experiments support the use of lemon balm for treating Herpes simplex lesions and encourage clinical trials on this medicinal plant.
PMID: 19023806 DOI: 10.1080/14786410802075939 Nat Prod Res. 2008;22(16):1433-40. doi: 10.1080/14786410802075939. ncbi.nlm.nih.gov

Flavonoids from lemon balm (Melissa officinalis L., Lamiaceae).
Patora J, Klimek B.
Abstract
Six flavonoids have been isolated from the leaves of lemon balm (Melissa officinalis L., Lamiaceae). Their structures were determined on the basis of spectral data (UV, 1R, 1H NMR, 13C NMR and FAB MS) as luteolin, luteolin 7-O-beta-D-glucopyranoside, apigenin 7-O-beta-D-glucopyranoside, luteolin 7-O-beta-D-glucuronopyranoside, luteolin 3'-O-beta-D-glucuronopyranoside and luteolin 7-O-beta-D-glucopyranoside-3'-Obeta-D-glucuronopyranoside. The last three glycosides have been found in lemon balm for the first time and luteolin 7-O-beta-D-glucopyranoside-3'-O-beta-D-glucuronopyranoside is a new compound found in plants.
PMID: 12365606  Acta Pol Pharm. 2002 Mar-Apr;59(2):139-43. ncbi.nlm.nih.gov