Brand and Other Names:leonurus cardiaca, lion's ear, more...lion's tail, throw wort
- Classes: Cardiovascular, Herbals
Crushed herb: 4.5 g PO q30-60min (acute conditions); TID (chronic)
Other preparations: see mfr's directions
Arrhythmia, low cardiac output, delayed menstruation, metrorrhagia
Efficacy: Insufficient reliable evidence, may improve menstrual flow, has relaxing effect on heart
Serious - Use Alternative
Significant - Monitor Closely
Frequency Not Defined
Pregnancy, thyroid conditions
Pregnancy & Lactation
Pregnancy Category: avoid
Lactation: use caution
A:Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.
B:May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk.
C:Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done.
D:Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk.
X:Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist.
NA:Information not available.
Mechanism of Action
Emmenagogue: contains chemicals that have effects on uterus, which may result in improved menstrual flow
Cardiac: contains chemicals that have vasorelaxing & cardiotonic effects (digoxin-like)