Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Chinese Motherwort (Leonurus japonicus) has a long history of use in Traditional Chinese Medicine (TCM) for supporting menstrual health, particularly in addressing menstrual irregularity, delayed periods, and dysmenorrhea. In TCM, it is known as "Yi Mu Cao" and is traditionally prescribed to "activate blood," "regulate menstruation," and "dispel stasis," especially in cases of menstrual irregularities thought to be due to blood stagnation or deficiency.

Scientific studies investigating the efficacy of Chinese Motherwort for menstrual irregularity are limited and largely preclinical. Some laboratory studies indicate that compounds in Leonurus japonicus may have uterotonic effects (stimulating uterine contractions) and influence blood flow, which could theoretically support TCM's traditional use. However, high-quality clinical trials in humans are sparse, and systematic reviews have found insufficient rigorous evidence to conclusively validate its effectiveness for this indication.

In summary, the use of Chinese Motherwort to support or treat menstrual irregularity is primarily justified by traditional use, with only limited scientific evidence (mostly in vitro or animal studies) to support its efficacy. Most contemporary clinical guidelines do not include it due to the lack of robust clinical data. Its use persists mainly in herbal and traditional medicine contexts rather than mainstream medical practice.

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