Blue cohosh is a plant with yellow flowers that grows in North America. The root has been used to induce labor or menstruation. Blue cohosh has also been used to ease digestion. It has been taken as a pill, powder, or extract. Blue cohosh has also been made into a tea. It is likely not safe to take blue cohosh.


There are no advised doses for blue cohosh.

What Research Shows

There is not enough data to support that blue cohosh is helpful in treating health problems. We will review future studies as they are published.

Editorial process and description of evidence categories can be found at EBSCO NAT Editorial Process.

Safety Notes

It is likely not safe to take blue cohosh.2,4,5,7 Blue cohosh may raise blood pressure and blood sugar and cause other health problems. Women who are pregnant should avoid blue cohosh.1,3,6 No studies have been done to say whether it is safe for women who are breastfeeding.


Talk to your doctor about any supplements or therapy you would like to use. Some can interfere with treatment or make conditions worse.

Revision Information