Leonurus cardiaca Common name: Motherwort
Part used: Aerial parts
Constituents: Alkaloids (leonurine, betonicine and stachydrine), flavonoids, (apigenin, kaempferol, quercitin), iridoids, tannins, volatile oils, ursolic acid, vitamins A & C
Medicinal actions: Sedative, nervine, nervous system tonic, antibacterial, anti-fungal, hypothryoid, diaphoretic, cardiotonic, anti-arrhythmic, vasoconstrictor, circulatory stimulant, hypotensive, hepatic, laxative, antispasmodic, mild uterine stimulant and emmenagogue.
Medicinal use: Is most indicated in nervous debility with irritation and unrest. The hypotensive action is due to its vasodilatory effect, which also serves to increase circulation to the reproductive organs. Leonurus, as a gentle cardiotonic, is specific for cardiac disorders of nervous origin (i.e. tachycardia secondary to anxiety). Will also promote blood flow to female reproductive organs and balances hormones affecting the menstrual cycle as well as hyperthyroidism.
Pharmacy: Infusion: 1 tsp/cup water, 1-2 cups TID. Tincture (1:5, 45%), 4-6 ml TID. Capsules: 250 mg/cap; 1-2 cap TID.
Toxicity: No adverse effects expected within recommended doses.
Contraindicated: Pregnancy, menorrhagia.
Interactions: None reported. Theoretically interact with heart and cardiovascular therapy.