Evidence supporting the use of: Pennyroyal (unspecified)
For the health condition: Menstrual Irregularity

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Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Pennyroyal (Mentha pulegium or Hedeoma pulegioides) has a long history of traditional use as an emmenagogue, a substance believed to stimulate menstrual flow and address menstrual irregularities. Historical records from European, North American, and Middle Eastern herbal traditions cite pennyroyal tea or extracts as remedies for delayed or suppressed menstruation. The use of pennyroyal for this purpose is documented in herbals dating back several centuries, with practitioners recommending it for “bringing on the menses.” However, the practice is primarily rooted in folk medicine, and there is a lack of well-designed scientific studies or clinical trials validating its efficacy or safety for menstrual irregularity. Modern research highlights significant risks associated with pennyroyal, particularly due to the presence of pulegone, a compound known for its hepatotoxicity and potential to cause severe organ damage. Case reports of toxicity and fatalities, especially when consumed as concentrated oils, have led to strong medical warnings against its use. In summary, while pennyroyal’s use for menstrual irregularity is well-established in traditional practices, there is little to no scientific evidence to support its effectiveness, and safety concerns are significant.

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