Black cohosh is the most commonly recommended hot flash remedy. Research has been done concerning the effectiveness and safety of this kind of remedy than on any of the other herbs that can help menopause hot flash symptoms. But if you tried it and it doesn't work for you, then try the other alternatives. It is still uncertain for scientist to determine the reason why black cohosh is such an effective hot flash remedy. Assessments of the chemical compounds of other plants have revealed an estrogen-like substance, appropriately named phytoestrogens and these seem to affect other chemicals in a woman's body.