Botanical Overview
Leonurus cardiaca, commonly called Motherwort, Lion’s Tail, or Lion’s Ear, is a member of the Lamiaceae family. It is native to Europe and Western Asia and has been introduced to North America. The most commonly used parts are the aerial parts including the leaves and flowers.
Energetics
Motherwort is considered cooling in temperature and moistening in moisture. It has bitter and acrid tastes, directs its action descending, and is relaxing in tonicity. It primarily affects the qi dynamic in traditional energetic terms.
Primary Actions
- Anxiolytic
- Cardiotonic
- Nervine
- Spasmolytic
- Diaphoretic
Indications
Western
- Palpitations
- Anxiety
- Menstrual cramps
- Nervous tension
- Mild cardiac arrhythmias
- Insomnia
Syndromes
- Functional cardiovascular nervous complaints
- Neurogenic heart symptoms
- Dysmenorrhea
TCM
No established indications found.
Ayurveda
No established indications found.
Unani
No established indications found.
Constituents & Mechanisms
Contains alkaloids including leonurine which is notable for cardiac and nervine activity, flavonoids, iridoids, volatile oils, tannins, and phenolic acids.
Dosage & Preparations
- Tincture 1:5 in 40% ethanol, 2-5 mL, 1-3 times daily
- Infusion of 2-4 g dried herb in hot water, 1-3 times daily
- Capsules of standardized extract 250-500 mg, 1-3 times daily
Safety & Contraindications
Generally safe in moderate doses. Should be avoided in pregnancy and lactation due to possible uterine stimulation. May potentiate sedatives and has cautions for patients with thyroid disorders. Allergic reactions possible in sensitive individuals.
Astrological Correspondences
Planetary ruler: Moon
Elemental ruler: Water
Selected References
- Assessment report on Leonurus cardiaca L., herba, European Medicines Agency, 2013
- Leonurus cardiaca – Motherwort, Plants For A Future
- Herbal Medicine: Biomolecular and Clinical Aspects, 2nd edition, Speroni & Minghetti, 2011
- Modern Herbal Dispensatory, Jason Miller, 2015
- The Encyclopedia of Herbal Medicine, H.L. Smith, 2006