Although black cohosh is related to buttercup, its appearance couldn’t
be in more contrast to the low-growing, sunny yellow flower. In fact,
black cohosh has the distinction of producing clusters of white flowers
that lack sepals or petals supported on tall spikes, or racemes, that
can reach nearly two feet in height. Because the flowers emit a sweet
odor that repels flies and other insects, the herb is commonly known as
bugbane.
Black cohosh root contains a small amount of salicylic acid, so people
with a known allergy or sensitivity to aspirin should consult their
health care practitioner before using this herb. Similarly, the herb is
suspected of exerting hormonal effects, which may make it unsuitable for
individuals with a history of breast or prostate cancer or other
hormone-related condition. Black cohosh should not be used during
pregnancy without close medical supervision due to the risk of uterine
contractions. Do not use while nursing.