A shade-loving perennial native to eastern North America, black cohosh produces tall spires of white flowers above deeply lobed foliage and contains potent compounds concentrated in its woody rhizome. The Haudenosaunee and Cherokee peoples traditionally used it to regulate menstrual cycles and ease childbirth, making it one of the most studied herbs for hormonal support in contemporary herbalism.
rhizome, root
decoction, tincture, capsule, powder
40–80mg extract daily; 0.5–1g dried rhizome as decoction 1–3x daily
Not for use in pregnancy. Rare liver toxicity — discontinue if symptoms occur. Limit to 6 months.
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