Black Cohosh has been used historically by native North Americans as an insect repellent & and in the treatment of insect bites. Native north Americans & early settlers to North America also used the root of the plant to help with the pain of menstrual irregularities & rheumatism. Benefits of Black Cohosh Menstrual Problems has been shown to be useful for both painful & difficult menstruation & may help alleviate menstrual cramps. The herb also has anti anxiety & calming effects o