A strongly aromatic mint historically brewed by Southern women to bring on a late period and to ease cramps and colds, and rubbed on the skin to drive off bugs. Documented here for cultural completeness and, above all, as a serious safety warning — pennyroyal can be lethal.
Pennyroyal is part of the unspoken history of Black and Southern women's reproductive autonomy — an herb women turned to when they had no other options. Carrying that history honestly means naming both its desperate use and its real danger.
Pennyroyal occupies a real and somber place in the women's folk pharmacy: it was a known emmenagogue used to restart delayed menstruation. Its activity comes almost entirely from pulegone, a volatile oil — and that same compound is acutely hepatotoxic, metabolized into a liver-and-lung poison that has caused fatal poisonings and organ failure, especially from the concentrated essential oil. The historical record is essential to honest ancestral knowledge, but so is the truth that this herb killed women who used it to end pregnancies. Its only defensible modern uses are topical (as an insect repellent) and, in extremely mild traditional tea amounts, for cramps — and even those carry risk.
If used at all, only the dried LEAF in a weak, brief infusion — never the concentrated essential oil, which is deadly even in small amounts. Steep a small pinch in hot water for a few minutes. Historically also crushed fresh and rubbed on skin or clothing to repel insects. The safest modern preparation is topical only.
Free, no account needed to ask.