Caulophyllum thalictroides, also called blue cohosh, is a perennial plant of North America's damp undergrowth, long revered by Indigenous peoples as an ally of the female body. Traditional healers regarded it as a plant for life's great milestones, passed down with caution from generation to generation. Its use later spread into nineteenth-century American eclectic herbalism.
The root was traditionally used by certain Native American healers in the very last stage of pregnancy, to help prepare the body for childbirth. This historical use remains strictly reserved for professional supervision.
The rhizome was used as a decoction to help with painful or irregular periods, for what traditional herbalists called an emmenagogue purpose.
In more general use, the dried root went into preparations meant to relieve joint pain and muscle tension, according to folk tradition.
Some old sources mention an occasional use of the plant to calm digestive spasms, always at a low dose and only now and then.
A plant to be handled with great caution: it is formally discouraged during pregnancy outside the supervision of a doctor or an experienced midwife, because of reported uterus-stimulating properties. Contraindicated in children, during breastfeeding, or in the presence of cardiovascular disease, because of alkaloid compounds that can affect heart rhythm. Never use without the advice of a health professional skilled in herbal medicine, particularly if undergoing medication (risk of interaction). The fresh plant and the seeds are toxic; only the dried, properly prepared root is traditionally used, at a measured dose.
Partner herbalists — available with the detailed notebook.
PFAF, Wikipedia