Did some research on this I went to black cohosh, and this is what it does:
although rare, allergic reactions to black cohosh may occur. Stop taking black cohosh and seek emergency medical attention if you experience symptoms of a serious allergic reaction including difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives.
Large doses of black cohosh have been reported to cause
nausea,
dizziness,
seizures,
visual disturbances,
reduced pulse rate, and
increased sweating.
Stomach upset has been reported as a common side effect with the use of therapeutic doses of black cohosh.
Other side effects may also occur with the use of black cohosh. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
Black cohosh is also known as cimicifuga racemosa, baneberry, bugbane, black snake root, rattleroot, bugwort, and richweed. I got this from drug guide.. In foreign countries this is taken by women who are pregnant in labor and need to induce.. From what I have found out this also help women regulate when they are having irregular (periods), my grandmother use to take this when she was going through menapose, it did control the hot flashes for while, but after her body got use to it she had to stop taking it for awhile then start back..Be sure that if you are taking other medicines that you are careful not to take more than the normal doses..But if you check the herbal health websites, they give you detailed info on everything..Good luck to you.