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 Leonurus cardiaca (Labiatae)
MOTHERWORT, LION'S EAR
The common name reflects its use
by herbalists for painful periods and to contract the uterus after birth to
expel the placenta. It is also used in Chinese medicine.
The ancient Greeks used motherwort to relieve anxiety in new mothers,
whence its common name derives. Research has also shown that the herb is able to calm the
palpitations and irregular heartbeats sometimes created by nervous tension and anxiety. A European native,
it is perennial with hairy leaves and stems and whorls of pink-blue flowers in midsummer.
PARTS USED
Whole herb.
ACTIVE INGREDIENTS
Iridoid glycosides, including
leonuride; diterpenes, including leocardin; flavonoids, including rutin, quercetin, hyperoside, and apigenin.
ACTIONS
Mild stimulant to the womb; relaxant;
reduces muscle tension and spasm; tonic to the heart; mildly lowers blood pressure.
MEDICINAL USE
Used to treat painful periods, particularly when nervous tension is a factor,
and to help contract the womb after birth, so that the placenta is expelled.
It is also given for general nervous tension, and for palpitations and tachycardia (an abnormally fast heart beat).
In Chinese medicine, it is prescribed for menstrual problems, raised blood pressure, heart disease, and conjunctivitis.
PREPARATIONS
Infusion, tincture, tablets.
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