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Related to Leonorus cardiaca: Lycopus virginicus, motherwort, Marrubium vulgare
A perennial herb that contains alkaloids (e.g., leonurinine and stachydrine), bitter glycosides (e.g., leonurine and leonuridin), tannins, vitamin A and volatile oil; it is a sedative, spasmolytic, and antihypertensive, and used for irregular menses, tachyarrhythmias, to prolong life and for rabies
Toxicity It should be avoided in pregnancy, as it may cause uterine contractions, and in those with skin allergies

motherwort (mu·ther·wōrt),

n Latin name:
Leonurus cardiaca; parts used: leaves, seeds; uses: cardiotonic, menstrual problems, cardiac conditions, anticoagulant, antiinflammatory, antispasmodic, anxiolytic, anticancer; precautions: pregnancy, lactation, children, thrombocytopenia, anticoagulant medications, beta blockers, cardiac glycosides. Also called
i-mu-ts'ao, lion's ear, lion's tail, lion's-tart, oman, Roman motherwort, or